Add support for Endpoints 2.0

[dagnir]

Motivation and Context

New SDK feature.

Modifications

This release updates internal logic for constructing API endpoints.

We have added rule-based endpoint providers. Additionally there are new
interfaces for endpoint providers and parameters at the service client level.

The SDK provides service-specific `EndpointProvider` interfaces (e.g.
`S3EndpointProvider`), that have a single method `resolveEndpoint`.
`resolveEndpoint` accepts a set of parameters (also service specific) and
computes an endpoint based on those parameters. All clients have a default
implementation, but users are free to implement these to customize their
endpoint logic.

Testing

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed
• I have added a changelog entry. Adding a new entry must be accomplished by running the scripts/new-change script and following the instructions. Commit the new file created by the script in .changes/next-release with your changes.
• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[dagnir]

The GitHub workflow jobs AWS CodeBuild CI / jdk11-build (pull_request) and AWS CodeBuild CI / sonar-cloud-build (pull_request) seem to have timed out, but the codebuild jobs themselves succeeded. Will follow up with updating the timeout for the actions.

[sonarqubecloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
125 Code Smells

69.8% Coverage
0.6% Duplication