Converted placeholders to svg

* Required for SubscriptionFragment (otherwise the PopUp-menu uses half of the screen)
* Size reduction
* Fixed/Improved some images:
  * Bandcamp: Was facing in the wrong direction and used an incorrect logo
  * Media CCC: Update logo
  * YT: Added NewPipe logo so that it's not just a rectangle

Author: litetex

app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java

@@ -207,7 +207,7 @@ private void showAddItemDialog(final Context c) {
 
         new AlertDialog.Builder(c)
                 .setTitle(R.string.peertube_instance_add_title)
-                .setIcon(R.drawable.place_holder_peertube)
+                .setIcon(R.drawable.ic_placeholder_peertube)
                 .setView(dialogBinding.getRoot())
                 .setNegativeButton(R.string.cancel, null)
                 .setPositiveButton(R.string.ok, (dialog1, which) -> {
@@ -411,7 +411,7 @@ void bind(final int position, final TabViewHolder holder) {
                         lastChecked = instanceRB;
                     }
                 });
-                instanceIconView.setImageResource(R.drawable.place_holder_peertube);
+                instanceIconView.setImageResource(R.drawable.ic_placeholder_peertube);
             }
 
             @SuppressLint("ClickableViewAccessibility")

app/src/main/java/org/schabi/newpipe/util/ServiceHelper.java

@@ -31,17 +31,17 @@ private ServiceHelper() { }
     public static int getIcon(final int serviceId) {
         switch (serviceId) {
             case 0:
-                return R.drawable.place_holder_youtube;
+                return R.drawable.ic_placeholder_yt;
             case 1:
-                return R.drawable.place_holder_cloud;
+                return R.drawable.ic_placeholder_cloud;
             case 2:
-                return R.drawable.place_holder_gadse;
+                return R.drawable.ic_placeholder_media_ccc;
             case 3:
-                return R.drawable.place_holder_peertube;
+                return R.drawable.ic_placeholder_peertube;
             case 4:
-                return R.drawable.place_holder_bandcamp;
+                return R.drawable.ic_placeholder_bandcamp;
             default:
-                return R.drawable.place_holder_circle;
+                return R.drawable.ic_placeholder_circle;
         }
     }
 

app/src/main/res/drawable-nodpi/place_holder_bandcamp.png

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportHeight="97.75"
+    android:viewportWidth="97.75"
+    android:tint="@color/defaultIconTint">
+    <path
+        android:pathData="M48.875,0C21.882,0 0,21.882 0,48.875S21.882,97.75 48.875,97.75 97.75,75.868 97.75,48.875 75.868,0 48.875,0zM64.835,70.857L12.593,70.857l20.32,-43.965h52.244L64.835,70.857z"
+        android:fillColor="#FF000000" />
+</vector>

app/src/main/res/drawable-nodpi/place_holder_circle.png

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:width="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:tint="@color/defaultIconTint" >
+    <path
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10s10,-4.49 10,-10S17.52,2 12,2L12,2z"
+        android:fillColor="#FF000000" />
+</vector>