ExtensionScreen: Adjust item visual (#8120)

* ExtensionScreen: Adjust item visual

* Move install status view and add progress indicator
* Add secondary item modifier to info texts
* Wrap info texts with FlowRow in case of unavailable space
* Remove language text in non-installed items

Extra content:
* Change the list key to be more consistent
* General cleanups

* typo

app/src/main/java/eu/kanade/tachiyomi/ui/browse/extension/ExtensionsPresenter.kt

@@ -212,13 +212,5 @@ sealed interface ExtensionUiModel {
     data class Item(
         val extension: Extension,
         val installStep: InstallStep,
-    ) : ExtensionUiModel {
-
-        fun key(): String {
-            return when {
-                extension is Extension.Installed && extension.hasUpdate -> "${extension.pkgName}_update"
-                else -> "${extension.pkgName}_${installStep.name}"
-            }
-        }
-    }
+    ) : ExtensionUiModel
 }