Adding externalAppCardActionsForDA capability

[lakhveerk]

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Description

Added externalAppCardActionsForDA capability with actionOpenUrlDialog function that is designed for bizchat to call. Added UTs, E2e tests, and test app related changes for this capability.

Validation

Validation performed:

1. <Step 1>
2. <Step 2>

Unit Tests added:

Unit tests are required for all changes. If no unit tests were added as part of this change, please explain why they aren't necessary.
Yes

End-to-end tests added:

Yes,
This PR have the test cases for isSupported functions. The rest of the e2e tests will be added to host sdk

Additional Requirements

Change file added:

Ensure the change file meets the formatting requirements.

Yes

[github-actions]

This pull request contains changes to the runtime.ts file. If you, as the author of this PR, have made changes to the Runtime interface please review RUNTIME.md to determine if a new runtime version is required. Please reply to this comment stating what changes, if any, were made to the runtime object and whether a new runtime version was required.

[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
packages/teams-js/dist/esm/packages/teams-js/src/index.js	182.41 KB (+0.63% 🔺)	3.7 s (+0.63% 🔺)	2 s (+20.58% 🔺)	5.6 s

[lakhveerk]

This pull request contains changes to the runtime.ts file. If you, as the author of this PR, have made changes to the Runtime interface please review RUNTIME.md to determine if a new runtime version is required. Please reply to this comment stating what changes, if any, were made to the runtime object and whether a new runtime version was required.

Added a new capability to run time. A new runtime is not needed because it does not edit any of the existing capabilities.