Replace Noctalia screenshot plugin with flameshot

- Switch Sway screenshot keybinds to flameshot and start it with the session
- Replace the Noctalia screenshot plugin with the official clipboard plugin and dedicated clipboard shortcuts

ansible/roles/profile_desktop_sway/tasks/noctalia.yml

@@ -137,8 +137,8 @@
     owner: "{{ username }}"
     group: "{{ user_group }}"
   loop:
+    - clipboard
     - polkit-agent
-    - screenshot
     - usb-drive-manager
 
 - name: Ensure Noctalia cache directory exists