FEAT: add gotify (#715)

* FEAT: add gotify

* fix(lint): fix lint for gotify

public/v4/apps/gotify.yml

@@ -0,0 +1,26 @@
+captainVersion: 4
+services:
+    '$$cap_appname':
+        image: gotify/server:$$cap_version
+        volumes:
+            - '$$cap_appname-data:/app/data'
+            - '$$cap_appname-config:/etc/gotify/'
+caproverOneClickApp:
+    variables:
+        - id: '$$cap_version'
+          label: Gotify Version
+          defaultValue: '2.1.7'
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/gotify/server/tags
+          validRegex: "/^([^\\s^\\/])+$/"
+    instructions:
+        start: |-
+            Gotify is a simple server for sending and receiving messages
+            More details: https://gotify.net/
+        end: |-
+            Gotify has been successfully deployed!
+            First you need to enable websocket.
+            Then, log into your instance during the next minutes with user admin password admin and change this password.
+    displayName: Gotify
+    isOfficial: true
+    description: Gotify is a simple server for sending and receiving messages.
+    documentation: See https://github.com/gotify