Add missing swaymsg completions

The `-m/--monitor` option was missing from the bash and fish completions.

The `subscribe` IPC message type was missing from the bash, fish, and zsh
completions.

Signed-off-by: Peter Grayson <pete@jpgrayson.net>

completions/bash/swaymsg

@@ -17,10 +17,12 @@ _swaymsg()
     'get_binding_modes'
     'get_config'
     'send_tick'
+    'subscribe'
   )
 
   short=(
     -h
+    -m
     -p
     -q
     -r
@@ -31,6 +33,7 @@ _swaymsg()
 
   long=(
     --help
+    --monitor
     --pretty
     --quiet
     --raw

completions/fish/swaymsg.fish

@@ -2,6 +2,7 @@
 
 complete -f -c swaymsg
 complete -c swaymsg -s h -l help --description "Show help message and quit."
+complete -c swaymsg -s m -l monitor --description "Monitor subscribed events until killed."
 complete -c swaymsg -s p -l pretty --description "Use pretty output even when not using a tty."
 complete -c swaymsg -s q -l quiet --description "Sends the IPC message but does not print the response from sway."
 complete -c swaymsg -s r -l raw --description "Use raw output even if using tty."
@@ -20,3 +21,4 @@ complete -c swaymsg -s t -l type -fra 'get_binding_modes' --description "Gets a
 complete -c swaymsg -s t -l type -fra 'get_config' --description "Gets a JSON-encoded copy of the current configuration."
 complete -c swaymsg -s t -l type -fra 'get_seats' --description "Gets a JSON-encoded list of all seats, its properties and all assigned devices."
 complete -c swaymsg -s t -l type -fra 'send_tick' --description "Sends a tick event to all subscribed clients."
+complete -c swaymsg -s t -l type -fra 'subscribe' --description "Subscribe to a list of event types."

completions/zsh/_swaymsg

@@ -25,6 +25,7 @@ types=(
 'get_binding_modes'
 'get_config'
 'send_tick'
+'subscribe'
 )
 
 _arguments -s \