Separate environment configs (#6597)

* Separate environment configs

* wip

* wip

* test

* plugins

* test

* test

* .sequelizerc, unfortunately can't go through /utils/environment due to not supporting TS

* docker-compose -> docker compose

* fix: .local wipes .development

* Add custom validation message for invalid SECRET_KEY (often confused)

server/typings/index.d.ts

@@ -6,8 +6,6 @@ declare module "formidable/lib/file";
 
 declare module "oy-vey";
 
-declare module "dotenv";
-
 declare module "email-providers" {
   const list: string[];
   export default list;