feat: Voice Call Button in header

[Pecacheu]

Split off from #835

Replaces the obnoxious Voice Call preview card with a button in the header for DMs

But retains it in server voice channels (as requested by Insert)

Fixes #541

[Pecacheu]

Annnnd of course there's merge conflicts in the strings even tho I didn't add any new ones. Why not?

[Dissssy]

I love the stoat devs but i'm pretty sure this is like the third open PR for this specific ui feature in the last month lol

[Pecacheu]

@Dissssy Technically it was the first, but they told me to split off unrelated things from my mobile UI mega-PR into their own PRs. I ended up fixing this early on as it was way more annoying on a small phone screen.

[gabrielfordevelopment]

Can you provide a full screenshot?

[Pecacheu]

@gabrielfordevelopment Sure, here you go

Out of call on server (unchanged)

Out of call on DM:

In call on DM:

[gabrielfordevelopment]

Thank you so much for the provided media files.
It looks a bit weird in voice channels that there is a duplicated button that does the same thing.

[Pecacheu]

Thank you so much for the provided media files. It looks a bit weird in voice channels that there is a duplicated button that does the same thing.

I think it looks fine that way, but we could make it hide when in a call. Question for UI/UX

[infi]

Resolutions on disagreements above:

• The call card should always be visible whenever there is an ongoing call in a channel
• There must not be a second "end call" button on the screen, that feature is part of the extended call card