Open room member avatar in a media viewer (#1911)

* Open room member avatar in viewer.

The `MediaViewer` was extracted to its own library module.

* Update screenshots

* Restore KSP processor in `:libraries:mediaviewer:api`, this should generate Showkase components again.

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

plugins/src/main/kotlin/extension/DependencyHandleScope.kt

@@ -105,6 +105,7 @@ fun DependencyHandlerScope.allLibrariesImpl() {
     implementation(project(":libraries:cryptography:impl"))
     implementation(project(":libraries:voicerecorder:impl"))
     implementation(project(":libraries:mediaplayer:impl"))
+    implementation(project(":libraries:mediaviewer:impl"))
 }
 
 fun DependencyHandlerScope.allServicesImpl() {