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>

backend/src/config/dto/adminConfig.dto.ts

@@ -17,6 +17,9 @@ export class AdminConfigDTO extends ConfigDTO {
   @Expose()
   obscured: boolean;
 
+  @Expose()
+  allowEdit: boolean;
+
   from(partial: Partial<AdminConfigDTO>) {
     return plainToClass(AdminConfigDTO, partial, {
       excludeExtraneousValues: true,