Add protocol argument to WithEndpoint

[sebastienros]

Description

Adds an optional argument to set the protocol on new endpoints. Currently defaults to tcp with no way to change it but use the overload that take a lamda.

Based on this discussion

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Is this introducing a breaking change?
      • Yes
        • Link to aspire-docs issue (please use this breaking-change template):
      • No
        • Link to aspire-docs issue (please use this doc-idea template):
  • No

[Copilot]

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

[davidfowl]

This is a breaking change no?

[davidfowl]

Are there any other arguments we should add? This API is frankly a versioning disaster 😄

[eerhardt]

Not sure why Final Results isn't running. Maybe this PR got opened before we made that? I'm going to commit my nit comment to kick off a new CI.