wayland: implement wl_touch

Co-authored-by: Julian Orth <ju.orth@gmail.com>

src/tools/tool_client.rs

@@ -330,7 +330,7 @@ impl ToolClient {
             self_id: s.registry,
             name: s.jay_compositor.0,
             interface: JayCompositor.name(),
-            version: s.jay_compositor.1.min(3),
+            version: s.jay_compositor.1.min(4),
             id: id.into(),
         });
         self.jay_compositor.set(Some(id));