[Compound] Integrate compound tokens (#586)

* Added tokens.

* Apply color to MaterialTheme, also add typography.

* Map colors to the right ones in the themes.

* Create and improve previews of some components

* More preview improvements

* Add `tertiary` and `onTertiary` colors, remove some unused ones.

* Fix usage of deleted color token

* Fix bug in Switch previews

* Create a separate `:libraries:theme` module to keep everything related to colors, typography and Compound in general.

* Fix `DatePickerPreview`

* Add missing Compound generated files by fixing their package name

* Move `ElementTheme` to the `:libraries:theme` module, make some variables internal.

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

libraries/designsystem/build.gradle.kts

@@ -28,9 +28,9 @@ android {
     }
 
     dependencies {
+        api(projects.libraries.theme)
         // Should not be there, but this is a POC
         implementation(libs.coil.compose)
-        implementation(libs.accompanist.systemui)
         implementation(libs.vanniktech.blurhash)
         implementation(projects.libraries.uiStrings)