feat(content-releases): add functionality to publish release button

[Feranchz]

What does it do?

Link publish button in release details view with its endpoint.

How to test it?

You should have an EE license and the feature enabled by setting contentReleases as enabled on the feature file.

// myproject/config/features.js
module.exports = ({ env }) => ({
  future: {
    contentReleases: true
  },
});

1. Create a new release and add entries to it
2. Publish this release clicking on the "Release" button on the top right
3. You should see a success message and now the release is on "only-view" mode
4. All the entries related should be published/unpublished

[github-actions]

Size Change: +109 B (0%)

Total Size: 666 kB

Filename	Size	Change
examples/getstarted/build/main.********.js	659 kB	+106 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
examples/getstarted/build/bb4d0d527bdfb161bc5a.svg	2.33 kB	0 B
examples/getstarted/build/index.html	611 B	+2 B (0%)
examples/getstarted/build/runtime~main.********.js	4.28 kB	+1 B (0%)

_{compressed-size-action}

[simotae14]

I tried the feature and it works, just one question, I saw the Release button enabled even if you don't have actions to release, is it not better to disable the button until we have actions?

[markkaylor]