chore: rename aws-lambda-python → aws-lambda-python-alpha (#25067)

This PR is part of a refactor to make all directory names equal to the package name of the package inside it.

It is a re-roll of #24930, but split into parts (one PR per package), so that we will cut down on merge conflicts.

----

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

Author: rix0rrr

packages/@aws-cdk/aws-lambda-python/.eslintrc.js renamed to packages/@aws-cdk/aws-lambda-python-alpha/.eslintrc.js

@@ -18,7 +18,7 @@ nyc.config.js
 !jest.config.js
 
 junit.xml
-test/lambda-handler-*/requirements.txt
+!test/lambda-handler*/requirements.txt
 
 !**/*.snapshot/**/asset.*/*.js
 !**/*.snapshot/**/asset.*/*.d.ts

packages/@aws-cdk/aws-lambda-python/.gitignore renamed to packages/@aws-cdk/aws-lambda-python-alpha/.gitignore

@@ -45,7 +45,7 @@
   "repository": {
     "type": "git",
     "url": "https://github.com/aws/aws-cdk.git",
-    "directory": "packages/@aws-cdk/aws-lambda-python"
+    "directory": "packages/@aws-cdk/aws-lambda-python-alpha"
   },
   "scripts": {
     "build": "cdk-build",

packages/@aws-cdk/aws-lambda-python/.npmignore renamed to packages/@aws-cdk/aws-lambda-python-alpha/.npmignore

@@ -52,7 +52,7 @@ test('PythonFunction with defaults', () => {
   });
 
   expect(Bundling.bundle).toHaveBeenCalledWith(expect.objectContaining({
-    entry: expect.stringMatching(/aws-lambda-python\/test\/lambda-handler$/),
+    entry: expect.stringMatching(/aws-lambda-python-alpha\/test\/lambda-handler$/),
   }));
 
   Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Function', {
@@ -69,7 +69,7 @@ test('PythonFunction with index in a subdirectory', () => {
   });
 
   expect(Bundling.bundle).toHaveBeenCalledWith(expect.objectContaining({
-    entry: expect.stringMatching(/aws-lambda-python\/test\/lambda-handler-sub$/),
+    entry: expect.stringMatching(/aws-lambda-python-alpha\/test\/lambda-handler-sub$/),
   }));
 
   Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Function', {
@@ -86,7 +86,7 @@ test('PythonFunction with index in a nested subdirectory', () => {
   });
 
   expect(Bundling.bundle).toHaveBeenCalledWith(expect.objectContaining({
-    entry: expect.stringMatching(/aws-lambda-python\/test\/lambda-handler-sub-nested$/),
+    entry: expect.stringMatching(/aws-lambda-python-alpha\/test\/lambda-handler-sub-nested$/),
   }));
 
   Template.fromStack(stack).hasResourceProperties('AWS::Lambda::Function', {