fix(serve): fixed long rebuilds with dx serve

packages/cli-config/src/config.rs

@@ -448,6 +448,22 @@ impl CrateConfig {
         self.crate_dir.join(&self.dioxus_config.application.out_dir)
     }
 
+    /// Compose an out directory for the fullstack platform. See `out_dir()`
+    /// method.
+    pub fn fullstack_out_dir(&self) -> PathBuf {
+        self.crate_dir.join(".dioxus")
+    }
+
+    /// Compose a target directory for the server (fullstack-only?).
+    pub fn server_target_dir(&self) -> PathBuf {
+        self.fullstack_out_dir().join("ssr")
+    }
+
+    /// Compose a target directory for the client (fullstack-only?).
+    pub fn client_target_dir(&self) -> PathBuf {
+        self.fullstack_out_dir().join("web")
+    }
+
     pub fn as_example(&mut self, example_name: String) -> &mut Self {
         self.executable = ExecutableType::Example(example_name);
         self