[New App] JDownloader2 (#307)

### App Information

Name: JDownloader2
Short Description: Free & open-source download management tool
Official Website: https://jdownloader.org/
Docker Image: https://hub.docker.com/r/jlesage/jdownloader-2

Closes #79

Apps/JDownloader2/docker-compose.yml

@@ -0,0 +1,92 @@
+name: jdownloader2
+services:
+  jdownloader2:
+    image: jlesage/jdownloader-2:latest
+    restart: unless-stopped
+    x-casaos:
+      volumes:
+        - container: /config
+          description:
+            en_us: Configs
+        - container: /output
+          description:
+            en_us: Downloads
+      envs:
+        - container: TZ
+          description:
+            en_us: TimeZone
+        - container: USER_ID
+          description:
+            en_us: ID of the user the application runs as. See User/Group IDs to better understand when this should be set.
+        - container: GROUP_ID
+          description:
+            en_us: ID of the group the application runs as. See User/Group IDs to better understand when this should be set.
+        - container: MYJDOWNLOADER_EMAIL
+          description:
+            en_us: Email address of the MyJDownloader account to use. Note that this can also be configured via the JDownloader GUI.
+        - container: MYJDOWNLOADER_PASSWORD
+          description:
+            en_us: Password of the MyJDownloader account to use. Note that this can also be configured via the JDownloader GUI.
+        - container: MYJDOWNLOADER_DEVICE_NAME
+          description:
+            en_us: The name of this JDownloader instance. Note that this can also be configured via the JDownloader GUI.
+        - container: JDOWNLOADER_HEADLESS
+          description:
+            en_us: When set to 1, JDownloader is running in headless mode, meaning that no GUI is available. In this mode, MyJDownloader should be used to remote control JDownloader.
+      ports:
+        - container: "5800"
+          description:
+            en_us: Port to access the application's GUI via the web interface. Mapping to the host is optional if access through the web interface is not wanted. For a container not using the default bridge network, the port can be changed with the WEB_LISTENING_PORT environment variable.
+        - container: "5900"
+          description:
+            en_us: Port to access the application's GUI via the VNC protocol. Mapping to the host is optional if access through the VNC protocol is not wanted. For a container not using the default bridge network, the port can be changed with the VNC_LISTENING_PORT environment variable.
+        - container: "3129"
+          description:
+            en_us: "Port used by MyJDownloader mobile applications and browser extensions to establish a direct connect to the JDownloader Docker container instance. Port needs to be exposed only if MyJDownloader is enabled and configured in Direct Connection mode. NOTE: Since this port is being reported to the MyJDownloader online service, the port mapped on the host side must be the same (i.e. 3129)."
+    environment:
+      - USER_ID=$PUID
+      - GROUP_ID=$PGID
+      - TZ=$TZ
+      - MYJDOWNLOADER_EMAIL=$MYJDOWNLOADER_EMAIL
+      - MYJDOWNLOADER_PASSWORD=$MYJDOWNLOADER_PASSWORD
+      - MYJDOWNLOADER_DEVICE_NAME=$MYJDOWNLOADER_DEVICE_NAME
+      - JDOWNLOADER_HEADLESS=$JDOWNLOADER_HEADLESS
+    ports:
+      - target: 5800
+        published: "5800"
+        protocol: tcp
+      - target: 5900
+        published: "5900"
+        protocol: tcp
+      - target: 3129
+        published: "3129"
+        protocol: tcp
+    volumes:
+      - type: bind
+        source: /DATA/AppData/jdownloader2/config
+        target: /config
+      - type: bind
+        source: /DATA/Downloads
+        target: /output
+    container_name: jdownloader2
+x-casaos:
+  architectures:
+    - amd64
+    - arm64
+  main: jdownloader2
+  description:
+    en_us: JDownloader is a free, open-source download management tool with a huge community that makes downloading as easy and fast as it should be. Users can start, stop or pause downloads, set bandwith limitations, auto-extract archives and much more. It's an easy-to-extend framework that can save hours of your valuable time every day!
+  tagline:
+    en_us: Free & open-source download management tool
+  developer: jdownloader
+  icon: https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/JDownloader2/icon.png
+  screenshot_link:
+    - https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/JDownloader2/screenshot-1.jpg
+    - https://cdn.jsdelivr.net/gh/IceWhaleTech/CasaOS-AppStore@main/Apps/JDownloader2/screenshot-2.jpg
+  author: Fabio Tea
+  category: Utility
+  port_map: "5800"
+  scheme: http
+  store_app_id: jdownloader2
+  title:
+    en_us: JDownloader2