Add option to open app settings from system settings (#3180)

Co-authored-by: AntsyLich <59261191+AntsyLich@users.noreply.github.com>

app/src/main/AndroidManifest.xml

@@ -141,6 +141,10 @@
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="text/plain" />
             </intent-filter>
+            <intent-filter android:label="@string/app_settings">
+                <action android:name="android.intent.action.APPLICATION_PREFERENCES" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
 
             <meta-data
                 android:name="android.app.searchable"

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -91,6 +91,7 @@ import eu.kanade.tachiyomi.ui.home.HomeScreen
 import eu.kanade.tachiyomi.ui.manga.MangaScreen
 import eu.kanade.tachiyomi.ui.more.NewUpdateScreen
 import eu.kanade.tachiyomi.ui.more.OnboardingScreen
+import eu.kanade.tachiyomi.ui.setting.SettingsScreen
 import eu.kanade.tachiyomi.util.system.dpToPx
 import eu.kanade.tachiyomi.util.system.isBenchmarkBuildType
 import eu.kanade.tachiyomi.util.system.isNavigationBarNeedsScrim
@@ -536,6 +537,11 @@ class MainActivity : BaseActivity() {
                 navigator.popUntilRoot()
                 HomeScreen.Tab.More(toDownloads = true)
             }
+            Intent.ACTION_APPLICATION_PREFERENCES -> {
+                navigator.popUntilRoot()
+                navigator.push(SettingsScreen())
+                null
+            }
             Intent.ACTION_SEARCH, Intent.ACTION_SEND, "com.google.android.gms.actions.SEARCH_ACTION" -> {
                 // If the intent match the "standard" Android search intent
                 // or the Google-specific search intent (triggered by saying or typing "search *query* on *Tachiyomi*" in Google Search/Google Assistant)