Refactor push_tasks and add send_push,timetask functions

.config/fish/functions/push_tasks.fish

@@ -1,10 +1,4 @@
-function push_tasks -a token user -d 'Push tasks as a notification to your phone'
+function push_tasks -d 'Push tasks as a notification to your phone'
   set tasks (task +READY export | jq 'sort_by(.urgency) | reverse | map(@text "\(.description)\nLink: \(.link)") | join("\n\n")')
-  set payload "{\"token\":\"$token\",\"user\":\"$user\",\"title\":\"Tasks\",\"message\":$tasks}"
-
-  curl \
-    -X POST \
-    -H 'Content-Type: application/json' \
-    -d $payload \
-    https://api.pushover.net/1/messages.json
+  send_push $tasks
 end