Revamp image options screen

[vandorsx]

I found adding alt text to be a subpar experience. These changes aim to improve it:

• Media display is now dynamically sized
  • Takes up max width up to a height of 300px
• Alt text input box now takes up the rest of the view
• Remove button has been moved to the topBar
• Keyboard behavior changed to "padding" to prevent image from being pushed up even with a small amount of text

Before	After

Notes:

• I have not tested this on Android. If all looks good, I can set up an Android simulator to confirm it works. Theoretically should work
• I have not tested video because I don't pay for Premium. Theoretically should work

[manton]

Thanks @in-the-trees! This looks nice to me. I'm going to do another bug fix release first before we merge this in, just want to make sure @vincentritter and I have a chance to test it.

[manton]

I'm going to merge this. I'm also going to try to get the AI-generated text hooked into this, similar to what we do on the web now.

There is an old branch that we never shipped that also overlaps with this a little, to bring back the photo filters we had in previous versions of the app. I'm on the fence about exactly how we bring that back, but I think it will fit nicely with this either way.

Thanks again!

[vandorsx]

Thanks! I hope this gives you a good foundation to build out those features :)