Initial grid widget implementation

Adds a new widget that allows to configure multiple actions.

Fixes #1193 #4549

Author: mrdanielps

app/src/main/AndroidManifest.xml

@@ -192,6 +192,20 @@
                 android:resource="@xml/template_widget_info" />
         </receiver>
 
+        <receiver android:name=".widgets.grid.GridWidget" android:label="@string/widget_grid_label"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+                <action android:name="io.homeassistant.companion.android.widgets.GridWidget.CALL_SERVICE" />
+                <action android:name="io.homeassistant.companion.android.widgets.GridWidget.CALL_SERVICE_AUTH" />
+                <action android:name="io.homeassistant.companion.android.widgets.GridWidget.RECEIVE_DATA" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/grid_widget_info" />
+        </receiver>
+
         <activity android:name=".widgets.button.ButtonWidgetConfigureActivity"
             android:configChanges="orientation|screenSize"
             android:exported="true">
@@ -238,6 +252,12 @@
                 <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
             </intent-filter>
         </activity>
+        <activity android:name=".widgets.grid.config.GridWidgetConfigureActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+            </intent-filter>
+        </activity>
 
         <service android:name=".sensors.NotificationSensorManager"
             android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE"

app/src/main/kotlin/io/homeassistant/companion/android/HomeAssistantApplication.kt

@@ -31,6 +31,7 @@ import io.homeassistant.companion.android.util.initCrashSaving
 import io.homeassistant.companion.android.websocket.WebsocketBroadcastReceiver
 import io.homeassistant.companion.android.widgets.button.ButtonWidget
 import io.homeassistant.companion.android.widgets.entity.EntityWidget
+import io.homeassistant.companion.android.widgets.grid.GridWidget
 import io.homeassistant.companion.android.widgets.mediaplayer.MediaPlayerControlsWidget
 import io.homeassistant.companion.android.widgets.template.TemplateWidget
 import io.homeassistant.companion.android.widgets.todo.TodoWidget
@@ -304,6 +305,7 @@ open class HomeAssistantApplication : Application(), SingletonImageLoader.Factor
             val mediaPlayerWidget = MediaPlayerControlsWidget()
             val templateWidget = TemplateWidget()
             TodoWidget().registerReceiver(this)
+            GridWidget().registerReceiver(this)
 
             val screenIntentFilter = IntentFilter()
             screenIntentFilter.addAction(Intent.ACTION_SCREEN_ON)