feat(codebuild): add support of organization webhook in github source (#31740)

### Issue # (if applicable)
closes #31736

### Reason for this change
Currently, the AWS CDK `aws-codebuild` module lacks native support for creating GitHub organization-level webhooks through the `Source` construct. Users need to manually use the `CfnProject` to enable organization webhooks, which adds complexity and inconsistency to the CodeBuild setup. This PR introduces support for creating GitHub organization webhooks directly within the `Source` construct, streamlining the experience and making it more consistent with the rest of the AWS CDK's high-level constructs.

### Description of changes

- Enhanced the `GitHubSource` construct in the `aws-codebuild` module to support GitHub organization webhooks.
- Updated the `GitHubSource` construct's configuration to so when repo is not specified an organization webhook is created.
- Added filter of `REPOSITORY_NAME` to FilterGroups.

### Description of how you validated changes
- [x] Added unit tests to validate that organization-level webhooks are created correctly when repo is not specified.
- [x] Ran integration tests to ensure that the changes do not break any existing functionality related to project webhooks.
- [x] Tested deployment of a CodeBuild project with organization webhook setup in a sample CDK application to verify end-to-end functionality.

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: dviryamin

packages/@aws-cdk-testing/framework-integ/test/aws-codebuild/test/integ.github-org-webhook.js.snapshot/cdk.out

@@ -0,0 +1,181 @@
+{
+  "Resources": {
+    "MyProjectRole9BBE5233": {
+      "Type": "AWS::IAM::Role",
+      "Properties": {
+        "AssumeRolePolicyDocument": {
+          "Statement": [
+            {
+              "Action": "sts:AssumeRole",
+              "Effect": "Allow",
+              "Principal": {
+                "Service": "codebuild.amazonaws.com"
+              }
+            }
+          ],
+          "Version": "2012-10-17"
+        }
+      }
+    },
+    "MyProjectRoleDefaultPolicyB19B7C29": {
+      "Type": "AWS::IAM::Policy",
+      "Properties": {
+        "PolicyDocument": {
+          "Statement": [
+            {
+              "Action": [
+                "logs:CreateLogGroup",
+                "logs:CreateLogStream",
+                "logs:PutLogEvents"
+              ],
+              "Effect": "Allow",
+              "Resource": [
+                {
+                  "Fn::Join": [
+                    "",
+                    [
+                      "arn:",
+                      {
+                        "Ref": "AWS::Partition"
+                      },
+                      ":logs:",
+                      {
+                        "Ref": "AWS::Region"
+                      },
+                      ":",
+                      {
+                        "Ref": "AWS::AccountId"
+                      },
+                      ":log-group:/aws/codebuild/",
+                      {
+                        "Ref": "MyProject39F7B0AE"
+                      },
+                      ":*"
+                    ]
+                  ]
+                },
+                {
+                  "Fn::Join": [
+                    "",
+                    [
+                      "arn:",
+                      {
+                        "Ref": "AWS::Partition"
+                      },
+                      ":logs:",
+                      {
+                        "Ref": "AWS::Region"
+                      },
+                      ":",
+                      {
+                        "Ref": "AWS::AccountId"
+                      },
+                      ":log-group:/aws/codebuild/",
+                      {
+                        "Ref": "MyProject39F7B0AE"
+                      }
+                    ]
+                  ]
+                }
+              ]
+            }
+          ],
+          "Version": "2012-10-17"
+        },
+        "PolicyName": "MyProjectRoleDefaultPolicyB19B7C29",
+        "Roles": [
+          {
+            "Ref": "MyProjectRole9BBE5233"
+          }
+        ]
+      }
+    },
+    "MyProject39F7B0AE": {
+      "Type": "AWS::CodeBuild::Project",
+      "Properties": {
+        "Artifacts": {
+          "Type": "NO_ARTIFACTS"
+        },
+        "Cache": {
+          "Type": "NO_CACHE"
+        },
+        "EncryptionKey": "alias/aws/s3",
+        "Environment": {
+          "ComputeType": "BUILD_GENERAL1_SMALL",
+          "Image": "aws/codebuild/standard:7.0",
+          "ImagePullCredentialsType": "CODEBUILD",
+          "PrivilegedMode": false,
+          "Type": "LINUX_CONTAINER"
+        },
+        "ServiceRole": {
+          "Fn::GetAtt": [
+            "MyProjectRole9BBE5233",
+            "Arn"
+          ]
+        },
+        "Source": {
+          "Location": "CODEBUILD_DEFAULT_WEBHOOK_SOURCE_LOCATION",
+          "ReportBuildStatus": false,
+          "Type": "GITHUB"
+        },
+        "Triggers": {
+          "FilterGroups": [
+            [
+              {
+                "Pattern": "WORKFLOW_JOB_QUEUED",
+                "Type": "EVENT"
+              },
+              {
+                "Pattern": "aws-cdk.*",
+                "Type": "REPOSITORY_NAME"
+              },
+              {
+                "ExcludeMatchedPattern": true,
+                "Pattern": "aws-cdk-lib",
+                "Type": "REPOSITORY_NAME"
+              }
+            ]
+          ],
+          "ScopeConfiguration": {
+            "Name": "aws"
+          },
+          "Webhook": true
+        }
+      }
+    }
+  },
+  "Parameters": {
+    "BootstrapVersion": {
+      "Type": "AWS::SSM::Parameter::Value<String>",
+      "Default": "/cdk-bootstrap/hnb659fds/version",
+      "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+    }
+  },
+  "Rules": {
+    "CheckBootstrapVersion": {
+      "Assertions": [
+        {
+          "Assert": {
+            "Fn::Not": [
+              {
+                "Fn::Contains": [
+                  [
+                    "1",
+                    "2",
+                    "3",
+                    "4",
+                    "5"
+                  ],
+                  {
+                    "Ref": "BootstrapVersion"
+                  }
+                ]
+              }
+            ]
+          },
+          "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+        }
+      ]
+    }
+  }
+}