feat(publish): add --set-version <version> flag

[ckrassow]

This PR adds a --set-version flag to the deno publish subcommand.

First contribution so likely something I missed. Added a test in test/specs/publish called "successful_override_version". I made a PR few days ago but realized I missed some steps so closed it and will use this one instead. Also not sure if this is considered a feat or fix but guessing feat fits better.

Issue: #22663

[satyarohith]

Thanks for the contribution @ckrassow!

We need to decide how this feature should behave in a workspace.

Nit on flag name: I think --set-version flag is more preferable vs --override-version since --set-* prefix is more common and shorter.

[ckrassow]

Thanks for the contribution @ckrassow!

We need to decide how this feature should behave in a workspace.

Nit on flag name: I think --set-version flag is more preferable vs --override-version since --set-* prefix is more common and shorter.

Okay, yeah I can see how the flag name makes more sense! I guess i'll just wait and see what you guys decide with how the feature should behave in the workspace as you say?

[satyarohith]

Thanks for the contribution @ckrassow!

LGTM. I'll let @dsherret merge the PR after review.

[dsherret]

This is introducing a change in the message. Surprisingly we don't have a test for this to have caught this.

[dsherret]

LGTM. Thanks!