feat(ghost): Add ghost (#1977)

* feat(ghost): Add ghost

* update docs

* use correct image

* full perms for tests

* don't set url on test

* set to localhost

* try default port

* whoops

* add more gui options

* strict perms

* rofs off

* root + rofs

* root + rofs off

* use strict perms

* Update charts/incubator/ghost/values.yaml

* Update charts/incubator/ghost/questions.yaml

* Update charts/incubator/ghost/questions.yaml

* Update charts/incubator/ghost/values.yaml

* update url env

Co-authored-by: Kjeld Schouten-Lebbing <kjeld@schouten-lebbing.nl>

docs/apps/app-requests.md

@@ -62,7 +62,6 @@ _This list is to track `App Requests` from one place._
 - [ ] Geth #1348
 - [ ] Spotify Connect #1319
 - [ ] Machinaris #1304
-- [ ] Ghost #1282
 - [ ] teslamate
 
 ##### TODO: Requires More-Than-Average effort
@@ -518,3 +517,4 @@ _These Apps have specific requirements or need specific customisation and care_
 - [x] Librephotos #293
 - [x] AMD - Automated Music Downloader
 - [x] Deemix #628
+- [x] Ghost #1282