Add steamos-reset-tool usage.

Instead of using steamos-factory-reset-config which resets both
the OS and the user home partitions use steamos-reset-tool which
has arguments for each or resetting both.

src/proxy/factory_reset1.rs

@@ -20,5 +20,5 @@ use zbus::proxy;
 )]
 trait FactoryReset1 {
     /// PrepareFactoryReset method
-    fn prepare_factory_reset(&self) -> zbus::Result<u32>;
+    fn prepare_factory_reset(&self, kind: u32) -> zbus::Result<u32>;
 }