fix(waybar): fix cava creating multiple instances

WaybarCava was creating a new instance of cava every time it was
executed. This happens when waybar is restarted/wallpaper is changed

Fixed by killing cava process referencing the same config

Fix: #131

config/hypr/scripts/WaybarCava.sh

@@ -28,5 +28,8 @@ data_format = ascii
 ascii_max_range = 7
 EOF
 
+# Kill cava if it's already running
+pkill -f "cava -p $config_file"
+
 # Read stdout from cava and perform substitution in a single sed command
 cava -p "$config_file" | sed -u "$dict"