Add package flags

info.yml

@@ -1,7 +1,7 @@
 name: waybar
 description: Highly customizable Wayland bar for Sway and Wlroots based compositors
 version: 0.15.0
-revision: 3
+revision: 4
 url: https://github.com/Alexays/Waybar
 license: MIT
 maintainers:
@@ -47,6 +47,14 @@ make_depends:
   - scdoc
   - wayland-protocols
   - python-setuptools
+flags:
+  - name: cava
+    default_value: disabled
+    accepted_values:
+      - value: enabled
+        depends:
+          - libcava
+      - value: disabled
 downloads:
   - url: https://github.com/Alexays/Waybar/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz
     extract_to: ${BPM_SOURCE}