android, desktop: add chat message tail and roundness settings (#4958)

* android, desktop: add roundness setting to chat items

* add tail setting

* use shape for clip

* wip tails

* shape style

* show tail only on last msg in group

* roundings

* padding for direct chats

* groups padding

* space between messages in settings preview

* refactor group paddings

* simplify

* simplify

* RcvDeleted handling

* revert uncessary

* import

* always maintain tail position

* rename

* reactions should not move

* short emoji shouldn't have tail

* remove invisible tail for voice without text

* better usage of gutters

* simplify

* rename

* simplify reactions

* linter happy

* exclude moderated items from shape

* uncessary diff

* func position

* fix chat view align on font resize (with image)

* fix tails moving bubble on max width

* fix big group names sometimes changing position

* small refactor

* fix top left corner end position

* rename

* sticky steps

* revert whitespace changes

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Co-authored-by: Avently <7953703+avently@users.noreply.github.com>
Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>

apps/multiplatform/common/src/androidMain/kotlin/chat/simplex/common/views/usersettings/Appearance.android.kt

@@ -115,6 +115,9 @@ fun AppearanceScope.AppearanceLayout(
     SectionDividerSpaced()
     ThemesSection(systemDarkTheme)
 
+    SectionDividerSpaced()
+    MessageShapeSection()
+
     SectionDividerSpaced()
     ProfileImageSection()