Add ntfy one click app (#780)

* Add ntfy one click app

* add ntfy one click app

* run formatter for ntfy.yml

public/v4/apps/ntfy.yml

@@ -0,0 +1,66 @@
+# Use schema version 4
+captainVersion: 4
+
+# One-click-app options
+caproverOneClickApp:
+    # App name
+    displayName: ntfy.sh
+
+    # Description displayed on the app list
+    description: |-
+        Send push notifications to your phone or desktop via PUT/POST
+
+    # Define instructions
+    instructions:
+        # Displayed one the app config page, where you enter all variable values
+        start: |-
+            ![ntfy Logo](https://raw.githubusercontent.com/binwiederhier/ntfy/48523a22693a59054c15d14e24565cd25fa1bf4c/web/public/static/img/ntfy.png)
+
+            📖 [Documentation](https://ntfy.sh/docs/)
+            📁 [GitHub](https://github.com/binwiederhier/ntfy)
+            🐳 [DockerHub](https://hub.docker.com/r/binwiederhier/ntfy)
+            👛 [Donate](https://github.com/sponsors/binwiederhier)
+
+            *ntfy* (pronounce: notify) is a simple HTTP-based pub-sub notification service. It allows you to send notifications to your phone or desktop via scripts from any computer, 
+            entirely without signup or cost. It's also open source (as you can plainly see) if you want to run your own.
+
+        # Displayed after deployment
+        end: |-
+            🎉🎉🎉 Successfully deployed!  
+            Check it out at: http://$$cap_appname.$$cap_root_domain
+
+            > *NOTE*: Enable HTTPS Support in the app's HTTP settings. You also need to activate websocket support in html settings!
+
+    # Documentation Link
+    documentation: https://ntfy.sh/docs/
+
+    # Whether this one-click-app uses the official image or a trusted source
+    isOfficial: true
+
+    # Define variables
+    variables:
+        # Variable for version
+        - id: $$cap_appversion
+          label: App Version
+          description: |-
+              Specify the version tag to install.  
+              Click [here](https://hub.docker.com/r/binwiederhier/ntfy/tags) for a list of available tags.
+          defaultValue: v1.28.0
+          validRegex: /^([^\s^\/])+$/
+
+# Define services
+services:
+    # ntfy service
+    $$cap_appname:
+        # CapRover's special options
+        caproverExtra:
+            dockerfileLines:
+                - FROM binwiederhier/ntfy:$$cap_appversion
+                - CMD ["serve"]
+
+        # Define volumes
+        volumes:
+            # Volume containing database data and config
+            - $$cap_appname-cache:/var/cache/ntfy
+            # Volume containing database data and config
+            - $$cap_appname-etc:/etc/ntfy