Add a "Copy Link" action in the share sheet

[sharunkumar]

[rsammelson]

This could also be moved to the share menu I'm adding in #202

[sharunkumar]

This could also be moved to the share menu I'm adding in #202

Hey yeah I guess I can contribute to it. Though, your branch seems like it needs to be rebased to the latest version?
Lemme know how I can add my commit to it

Update: it looks like the branch can be rebased without any conflicts: https://github.com/sharunkumar/voyager/commits/share-improvements

[rsammelson]

Yeah that was more a, "if that gets merged." Right now the main post action sheet is almost full, and @aeharding mentioned before he wanted to avoid adding things to it I think.

[sharunkumar]

Right now the main post action sheet is almost full

if that's the case, I feel like the upvote and downvote actions can be removed from the share sheet, because they're already available as buttons 🤔

[rsammelson]

See #417