Initial Angular code bring up for nimble-rich-text-viewer component

[vivinkrishna-ni]

Pull Request

🤨 Rationale

This PR includes the angular integration for the nimble-rich-text-viewer component, and it is intended to make the component available to the Angular application which allows us to get started with the other features of comments dependent on this component.

👩‍💻 Implementation

• Added directive and module for nimble-rich-text-viewer.
• Added nimble-rich-text-viewer to the example client app.

Note: We will add the input properties and attributes once the support for the markdown parser and other functionality in the component ( #1335) is completed.

🧪 Testing

Added basic unit tests for the directive.

✅ Checklist

• I have updated the project documentation to reflect my changes or determined no changes are needed.

[rajsite]

@atmgrifter00 and @suseendran-ni this PR is waiting on y'alls reviews

[vivinkrishna-ni]

@atmgrifter00 and @suseendran-ni this PR is waiting on y'alls reviews

@rajsite, FYI @suseendran-ni is out of office and he'll be back only by next week. Can we bypass his review as other code owners approved it?

[rajsite]

@rajsite, FYI @suseendran-ni is out of office and he'll be back only by next week. Can we bypass his review as other code owners approved it?

@vivinkrishna-ni yep, their review was not blocking, notice that the status checks were met. The status checks are approved if there is a minimum of one approver but you should use your best judgement to know if you need to wait for additional approvers.

If you are confident that it is possible to merge you are able to do so, no override should be needed. I merged from main and turned on autocomplete but in the future if it's ready to merge and you have required approvals that you are aware of you can merge.