added calibre-web (#536)

Co-authored-by: Akash Agarwal <ak4zh@pop-os.localdomain>

public/v4/apps/calibre.yml

@@ -0,0 +1,38 @@
+captainVersion: 4
+services:
+    # Calibre-web
+    $$cap_appname:
+        image: lscr.io/linuxserver/calibre-web:$$cap_app_version
+        restart: always
+        environment:
+            APP_URL: http://$$cap_appname.$$cap_root_domain
+            TZ: $$cap_timezone
+        volumes:
+            - $$cap_appname-config:/config
+            - $$cap_appname-books:/books
+        caproverExtra:
+            containerHttpPort: '8083'
+
+caproverOneClickApp:
+    variables:
+        - id: $$cap_app_version
+          label: Calibre-web
+          defaultValue: '2021.10.24'
+          description: Check out their docker page for the valid tags https://hub.docker.com/r/linuxserver/calibre-web/tags
+
+        - id: $$cap_timezone
+          label: Timezone
+          defaultValue: 'Europe/London'
+          description: 'See https://en.wikipedia.org/wiki/List_of_tz_database_time_zones for list of timezones.'
+
+    instructions:
+        start: >-
+            Calibre-web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing Calibre database. It is also possible to integrate google drive and edit metadata and your calibre library through the app itself.
+        end: >-
+            Done! 😄
+            Your service is available at http://$$cap_appname.$$cap_root_domain
+            Default admin login: Username: admin Password: admin123
+    displayName: 'Calibre Web'
+    isOfficial: true
+    description: Calibre-web is a web app providing a clean interface for browsing, reading and downloading eBooks using an existing Calibre database.
+    documentation: https://github.com/janeczku/calibre-web