Add audio template

src/audio/mod.rs

@@ -0,0 +1,19 @@
+#![allow(non_snake_case)]
+
+mod audioSource;
+
+use adw::glib::Object;
+use gtk::{glib};
+
+glib::wrapper! {
+    pub struct AudioSourceEntry(ObjectSubclass<audioSource::AudioSourceEntry>)
+    @extends gtk::Box, gtk::Widget,
+    @implements gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget, gtk::Orientable;
+}
+
+
+impl AudioSourceEntry {
+    pub fn new() -> Self {
+        Object::builder().build()
+    }
+}