Feature/compose cleanup (#1543)

* Moving color files

* Moving theme classes into their own package

* Only obtain new theme when required

* UI Tweaks

Using the proper color for danger as opposed to one hardcoded color
Reusing BlackAlpha40
Using the right delete icon in settings

* matching figma

* Matching signature across buttons

* Dialogs do not have a 'x' button by default

* Updated typography

Updated the typography in an composition local so it can be accessed from anyehere in compose and matching the figma declarations.

* Centered text in control messages

* Fixing new color access for action items

* renaming spacing to be more general

* Unifying dimensions and rectifying design inconsistencies

Unifying spacing values and reusing common ones
Identified spacing issues and inconsistencies in design and figma

* Rounded corners for the new conversation sheet

* Rounding sheets corners

* Spacing fixes and UI consolidating

Discussed with QA to make sure the 'new message' screen should  indeed behave as the other screens and use disabled state instead of disappearing

* Disappearing messages tweaks

Re-using our new radio buttons in disappearing messages
Tweaking UI to match designs

* Cleaning up spaces

* Migrating to Material3

* Fixing UI issues found

* PR feedbacks

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Co-authored-by: bemusementpark <bemusementpark>

libsession/src/main/res/values/colors.xml

@@ -1,6 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <resources>
-    <color name="destructive">#FF453A</color>
     <color name="unimportant">#D8D8D8</color>
     <color name="profile_picture_background">#353535</color>
     <color name="cell_background">#1B1B1B</color>