chore(aws-appconfig): add initial project structure

[chenjane-dev]

REPLACE THIS TEXT BLOCK

Describe the reason for this change, what the solution is, and any
important design decisions you made.

Remember to follow the CONTRIBUTING GUIDE and DESIGN GUIDELINES for any
code you submit.

Closes #.

---

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

[aws-cdk-automation]

The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed add Clarification Request to a comment.

[aws-cdk-automation]

The pull request linter fails with the following errors:

❌ The title of the pull request should omit 'aws-' from the name of modified packages. Use 'appconfig' instead of 'aws-appconfig'.

PRs must pass status checks before we can provide a meaningful review.

If you would like to request an exemption from the status checks or clarification on feedback, please leave a comment on this PR containing Exemption Request and/or Clarification Request.

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 71c6c10
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[aws-cdk-automation]

This PR cannot be merged because it has conflicts. Please resolve them. The PR will be considered stale and closed if it remains in an unmergeable state.