Add settings to hide images and videos in the timeline.

Hide images, videos and stickers in the timeline.
Disable click on hidden content. It must be revealed first.
Add preview without BlurHash.
Also hide image in thumbnails.

libraries/preferences/impl/src/main/kotlin/io/element/android/libraries/preferences/impl/store/DefaultAppPreferencesStore.kt

@@ -30,6 +30,7 @@ private val developerModeKey = booleanPreferencesKey("developerMode")
 private val customElementCallBaseUrlKey = stringPreferencesKey("elementCallBaseUrl")
 private val themeKey = stringPreferencesKey("theme")
 private val simplifiedSlidingSyncKey = booleanPreferencesKey("useSimplifiedSlidingSync")
+private val hideImagesAndVideosKey = booleanPreferencesKey("hideImagesAndVideos")
 
 @ContributesBinding(AppScope::class)
 class DefaultAppPreferencesStore @Inject constructor(
@@ -91,6 +92,18 @@ class DefaultAppPreferencesStore @Inject constructor(
         }
     }
 
+    override suspend fun setHideImagesAndVideos(value: Boolean) {
+        store.edit { prefs ->
+            prefs[hideImagesAndVideosKey] = value
+        }
+    }
+
+    override fun doesHideImagesAndVideosFlow(): Flow<Boolean> {
+        return store.data.map { prefs ->
+            prefs[hideImagesAndVideosKey] ?: false
+        }
+    }
+
     override suspend fun reset() {
         store.edit { it.clear() }
     }