Refactor FeedLoadService to use it within the notification worker

app/src/main/res/drawable-anydpi-v24/ic_stat_newpipe.xml

@@ -1,14 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="98.91304"
-    android:viewportHeight="98.91304"
-    android:tint="#FFFFFF">
-  <group android:translateX="-6.7255435"
-      android:translateY="-0.54347825">
-    <path
-        android:pathData="m23.909,10.211v78.869c0,0 7.7,-4.556 12.4,-7.337V67.477,56.739 31.686c0,0 3.707,2.173 8.948,5.24 6.263,3.579 14.57,8.565 21.473,12.655 -9.358,5.483 -16.8,9.876 -22.496,13.234V77.053C57.974,68.927 75.176,58.762 90.762,49.581 75.551,40.634 57.144,29.768 43.467,21.715 31.963,14.94 23.909,10.211 23.909,10.211Z"
-        android:strokeWidth="1.2782383"
-        android:fillColor="#ffffff"/>
-  </group>
-</vector>

app/src/main/res/values/settings_keys.xml

@@ -188,6 +188,7 @@
     <string name="disable_media_tunneling_key" translatable="false">disable_media_tunneling_key</string>
     <string name="crash_the_app_key" translatable="false">crash_the_app_key</string>
     <string name="show_image_indicators_key" translatable="false">show_image_indicators_key</string>
+    <string name="check_new_streams_key" translatable="false">check_new_streams</string>
 
     <!-- THEMES -->
     <string name="theme_key" translatable="false">theme</string>

app/src/main/res/values/strings.xml

@@ -481,6 +481,7 @@
     <string name="show_image_indicators_title">Show image indicators</string>
     <string name="show_image_indicators_summary">Show Picasso colored ribbons on top of images indicating their source: red for network, blue for disk and green for memory</string>
     <string name="crash_the_app">Crash the app</string>
+    <string name="check_new_streams">Run check for new streams</string>
     <!-- Subscriptions import/export -->
     <string name="import_title">Import</string>
     <string name="import_from">Import from</string>

app/src/main/res/xml/debug_settings.xml

@@ -49,6 +49,11 @@
         android:title="@string/show_image_indicators_title"
         app:iconSpaceReserved="false" />
 
+    <Preference
+        android:key="@string/check_new_streams_key"
+        android:title="@string/check_new_streams"
+        app:iconSpaceReserved="false" />
+
     <Preference
         android:key="@string/crash_the_app_key"
         android:title="@string/crash_the_app"