Add Mumble (#845)

* Add Mumble

* remove latest tag

* Rename to .yml

* Add Logo

* Fix formatting

* Updated the files

Co-authored-by: Kasra Bigdeli <kasra85@gmail.com>

public/v4/apps/mumble.yml

@@ -0,0 +1,33 @@
+captainVersion: 4
+services:
+    $$cap_appname:
+        image: mumblevoip/mumble-server:$$cap_version
+        container_name: mumble-server
+        hostname: mumble-server
+        restart: on-failure
+        volumes:
+            - $$cap_appname-data:/data/
+        ports:
+            - $$cap_port:64738
+        caproverExtra:
+            notExposeAsWebApp: 'true'
+caproverOneClickApp:
+    variables:
+        - label: Mumble Version
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/mumblevoip/mumble-server/tags
+          defaultValue: v1.4.230
+          validRegex: '/.{1,}/'
+          id: $$cap_version
+        - label: Voice Port (UDP)
+          description: Port for voice
+          defaultValue: '64738'
+          id: $$cap_port
+    instructions:
+        start: |-
+            Mumble is a free, open source, low latency, high quality voice chat application. The official Mumble server Docker image.
+        end: |-
+            Please write down the SuperUser user password found in the logs. These are needed to administrate the Mumble server.
+    displayName: Mumble server
+    isOfficial: true ## Only if all images used here are official or from a trusted source.
+    description: Mumble is an open-source, low-latency, high quality voice chat software.
+    documentation: This docker-compose is taken from https://github.com/mumble-voip/mumble-docker