Pull request template update for breaking changes

[jnunn-aws]

Description

This is the first PR for any repo to implement the additional assessment criteria for breaking changes. The team pre-approved the verbiage used here, however, this is a good opportunity to revise it before it is copied to other repos/branches so please take this into consideration before approving.

Motivation and Context

DOTNET-8366

Testing

No testing performed / Documentation only.

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed

License

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