Implement Gtk Network Status (#165)

Implemented
- Switch reacts to burrow socket and network changes 
- meson as build system
- Basic diagnostics to ensure burrow is installed properly
- Flatpak / Meson Building

burrow-gtk/build.rs

@@ -0,0 +1,16 @@
+use anyhow::Result;
+
+fn main() -> Result<()> {
+    compile_gresources()?;
+
+    Ok(())
+}
+
+fn compile_gresources() -> Result<()> {
+    glib_build_tools::compile_resources(
+        &["data"],
+        "data/resources.gresource.xml",
+        "compiled.gresource",
+    );
+    Ok(())
+}