feat: add ability to configure application with a config file (#740)

* add config file possibility

* revert port in docker compose

* Update docker-compose.yml

Co-authored-by: Elias Schneider <login@eliasschneider.com>

* Update docker-compose.yml

Co-authored-by: Elias Schneider <login@eliasschneider.com>

* add attribute description to config file

* remove email message config

* add package to resolve errors

* remove email messages from config

* move config initialization to config module

* revert unnecessary change

* add order

* improve alert

* run formatter

* remove unnecessary packages

* remove unnecessary types

* use logger

* don't save yaml config to db

* allowEdit if no yaml config is set

* improve docs

* fix allow edit state

* remove unnecessary check and refactor code

* restore old config file

* add script that generates `config.example.yaml` automatically

* allow config variables to be changed if they are not set in the `config.yml`

* add back init user

* Revert "allow config variables to be changed if they are not set in the `config.yml`"

This reverts commit 7dbdb6729034be5b083f126f854d5e1411735a54.

* improve info box text

---------

Co-authored-by: Elias Schneider <login@eliasschneider.com>

docker-compose.yml

@@ -9,6 +9,7 @@ services:
     volumes:
       - "./data:/opt/app/backend/data"
       - "./data/images:/opt/app/frontend/public/img"
+  #      - "./config.yaml:/opt/app/config.yaml" # Add this line, if you want to configure pingvin-share via config file and not via UI
 
   # To add ClamAV, to scan your shares for malicious files, 
   # see https://stonith404.github.io/pingvin-share/setup/integrations/#clamav-docker-only