feat(cdk): add --project-name init option

[nmussy]

Issue # (if applicable)

Closes #4865.

Reason for this change

Multiple requests have been made to allow the user to change the project name on cdk init, currently set to the working directory name, to a custom value.

Description of changes

This PR documents, implements and tests a new --project-name for the cdk init CLI. Its default value is the current behavior, i.e. the working directory name.

This PR follows up my previous attempt, now stale (#4884)

Description of how you validated changes

The new CLI option is being validated by a test added in init.test.ts

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

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

[nmussy]

Let me know if you would also like me to describe the new option in aws-cdk/README.md, or if this --help output is sufficient

[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.

[nmussy]

Exemption Request:

• The change is documented via the CLI --help command, but I can also add it to the aws-cdk/README.md
• A test case was added, but not to @aws-cdk-testing, let me know if this is required given the limited nature of the change
• This is not a breaking change
• CLI code was indeed changed and will need to go through the pipeline

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 9528f29
• 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 has been in the CHANGES REQUESTED state for 3 weeks, and looks abandoned. To keep this PR from being closed, please continue work on it. If not, it will automatically be closed in a week.

[nmussy]

I have not abandoned this PR, and am still awaiting a review

[aws-cdk-automation]

This PR has been deemed to be abandoned, and will be automatically closed. Please create a new PR for these changes if you think this decision has been made in error.

[aws-cdk-automation]

The pull request linter fails with the following errors:

❌ Features must contain a change to a README file.
❌ Features must contain a change to an integration test file and the resulting snapshot.
❌ Breaking changes in stable modules [cdk] is disallowed.
❌ CLI code has changed. A maintainer must run the code through the testing pipeline (git fetch origin pull/28979/head && git push -f origin FETCH_HEAD:test-main-pipeline), then add the 'pr-linter/cli-integ-tested' label when the pipeline succeeds.

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.

✅ A exemption request has been requested. Please wait for a maintainer's review.

[nmussy]

Sorry, I should have indicated that I reopened the same PR in #29695, given I couldn't reopen this one 👍