UI Cleanup and improvements

[jobobby04]

Finished a bunch of UI tweaks. Main highlights are

• Padding for click indicators look much better by applying padding after the clickable. This is done by removing padding from parent composables and applying it to the children instead.
• Add animations where possible, like expanding filter menu groups or switching between tabs
• Images now all crossfade between states
• Better image loading error display
• Consistent image loading placeholder
• Add display for languages instead of just showing the language code
• The linear loading indicator now overlays instead of being added between the toolbar and the content
• Use OutlinedTextFields instead of basic TextFields since they look better
• Handle no more content in catelog properly so its not displayed before loading
• Add BackHandler for library selection so it doesnt close the app when trying to deselect
• Replace clickable unread chip with a badge thats not clickable since it doesnt make sense to click it
• Selection background instead of a border for library and chapter list
• Clicking a settings item now starts/toggles/expands that setting
• Clicking a filter item now toggles/expands that filter
• Use a better cover ratio

Comparisons

Ignore the theme colors these were taken on different devices

Old	New

[jobobby04]

Comments addressed 👍

[Doomsdayrs]

Alright, final two notes and I will be happy with this.

1. Undo the change of turning the update header from a card to a surface, it violates material guidelines regarding elevation and objects moving under each other.
2. The animation of language filters in browse filter menu causes a stuttery transition. Have any clue on this?

[jobobby04]

1. I'll add the elevation back(I didnt notice it was a sticky header)
2. I'll take a look at it, though I'm not sure why it would cause that

[jobobby04]

Fixed 👍