Allow custom names for assets

[leoshusar]

Hello, I've seen that semantic-release/github has more options for assets, it has name property and both properties name and label are allowed to insert next version by for example ${nextRelease.gitTag}.

Is something like this planned for this plugin too?

It would be handy for me because I could've keep my binary archive named like build.tar.gz and then rename it to MyApp-v1.0.0.tar.gz by this plugin - mainly because path property cannot be dynamic even in github plugin.

Thank you!

[nfriend]

@leoshusar I think this would be a great feature to have 👍 It would be nice to maintain parity with @semantic-release/github in this case.

Would you be open to putting together a PR for this?

[fgreinacher]

I think everything discussed here is now possible, see https://github.com/semantic-release/gitlab#assets.

Feel free to reopen if something is missing.