Add debug option for allowing queries on main

app/src/debug/java/org/tasks/preferences/fragments/Debug.kt

@@ -26,7 +26,8 @@ class Debug : InjectingPreferenceFragment() {
             R.string.p_leakcanary,
             R.string.p_flipper,
             R.string.p_strict_mode_vm,
-            R.string.p_strict_mode_thread
+            R.string.p_strict_mode_thread,
+            R.string.p_debug_main_queries
         )) {
             findPreference(pref)
                 .setOnPreferenceChangeListener { _: Preference?, _: Any? ->

app/src/debug/res/values/keys.xml

@@ -13,4 +13,7 @@
   <string name="debug_themes">debug_themes</string>
   <string name="debug_tasker">debug_tasker</string>
   <string name="debug_reset_ssl">Reset SSL certificates</string>
+  <string name="debug_main_queries">Allow queries on main thread</string>
+
+  <string name="p_debug_main_queries">debug_main_queries</string>
 </resources>

app/src/debug/res/xml/preferences_debug.xml

@@ -17,6 +17,11 @@
     android:key="@string/p_strict_mode_vm"
     android:title="@string/debug_strict_mode_vm"/>
 
+  <SwitchPreferenceCompat
+    android:defaultValue="true"
+    android:key="@string/p_debug_main_queries"
+    android:title="@string/debug_main_queries" />
+
   <SwitchPreferenceCompat
     android:key="@string/p_debug_pro"
     android:title="@string/debug_pro"/>

app/src/main/java/org/tasks/injection/ProductionModule.kt

@@ -8,6 +8,8 @@ import dagger.Provides
 import dagger.hilt.InstallIn
 import dagger.hilt.android.components.ApplicationComponent
 import dagger.hilt.android.qualifiers.ApplicationContext
+import org.tasks.BuildConfig
+import org.tasks.R
 import org.tasks.data.CaldavDao
 import org.tasks.data.GoogleTaskListDao
 import org.tasks.db.Migrations
@@ -21,11 +23,13 @@ import javax.inject.Singleton
 internal class ProductionModule {
     @Provides
     @Singleton
-    fun getAppDatabase(@ApplicationContext context: Context): Database {
-        return Room.databaseBuilder(context, Database::class.java, Database.NAME)
-                .allowMainThreadQueries() // TODO: remove me
+    fun getAppDatabase(@ApplicationContext context: Context, preferences: Preferences): Database {
+        val builder = Room.databaseBuilder(context, Database::class.java, Database.NAME)
                 .addMigrations(*Migrations.MIGRATIONS)
-                .build()
+        if (!BuildConfig.DEBUG || preferences.getBoolean(R.string.p_debug_main_queries, true)) {
+            builder.allowMainThreadQueries()
+        }
+        return builder.build()
     }
 
     @Provides