Add base gnome extensions

gnome/.local/share/extensions/appindicatorsupport@rgcjonas.gmail.com/schemas/org.gnome.shell.extensions.appindicator.gschema.xml

@@ -0,0 +1,49 @@
+<schemalist gettext-domain="AppIndicatorExtension">
+  <schema id="org.gnome.shell.extensions.appindicator" path="/org/gnome/shell/extensions/appindicator/">
+    <key name="legacy-tray-enabled" type="b">
+      <default>true</default>
+      <summary>Enable legacy tray icons support</summary>
+    </key>
+    <key name="icon-saturation" type="d">
+      <default>0.0</default>
+      <summary>Saturation</summary>
+    </key>
+    <key name="icon-brightness" type="d">
+      <default>0.0</default>
+      <summary>Brightness</summary>
+    </key>
+    <key name="icon-contrast" type="d">
+      <default>0.0</default>
+      <summary>Contrast</summary>
+    </key>
+    <key name="icon-opacity" type="i">
+      <default>240</default>
+      <summary>Opacity</summary>
+    </key>
+    <key name="icon-size" type="i">
+      <default>0</default>
+      <summary>Icon size</summary>
+      <description>Icon size in pixel</description>
+    </key>
+    <key name="icon-spacing" type="i">
+      <default>12</default>
+      <summary>Icon spacing</summary>
+      <description>Icon spacing within the tray</description>
+    </key>
+    <key name="tray-pos" type="s">
+      <default>"right"</default>
+      <summary>Position in tray</summary>
+      <description>Set where the Icon tray should appear in Gnome tray</description>
+    </key>
+    <key name="tray-order" type="i">
+      <default>1</default>
+      <summary>Order in tray</summary>
+      <description>Set where the Icon tray should appear among other trays</description>
+    </key>
+    <key name="custom-icons" type="a(sss)">
+      <default>[]</default>
+      <summary>Custom icons</summary>
+      <description>Replace any icons with custom icons from themes</description>
+    </key>
+  </schema>
+</schemalist>