Configurations cleanup & database configurations for mail and pdfs (#479)

* Move Mail, PDF configuration to Database, standardize configurations

* Set default currency to USD on install

* Pint code

.env.example

@@ -1,19 +1,11 @@
 APP_ENV=production
+APP_DEBUG=false
 APP_KEY=base64:kgk/4DW1vEVy7aEvet5FPp5un6PIGe/so8H0mvoUtW0=
-APP_DEBUG=true
+
 APP_NAME="InvoiceShelf"
-APP_LOG_LEVEL=debug
 APP_TIMEZONE=UTC
 APP_URL=
-
 APP_LOCALE=en
-APP_FALLBACK_LOCALE=en
-APP_FAKER_LOCALE=en_US
-
-APP_MAINTENANCE_DRIVER=file
-APP_MAINTENANCE_STORE=database
-
-BCRYPT_ROUNDS=12
 
 DB_CONNECTION=sqlite
 DB_HOST=
@@ -22,38 +14,6 @@ DB_DATABASE=
 DB_USERNAME=
 DB_PASSWORD=
 
-BROADCAST_CONNECTION=log
-CACHE_STORE=file
-QUEUE_CONNECTION=sync
-SESSION_DRIVER=file
-SESSION_LIFETIME=1440
-SESSION_ENCRYPT=false
-SESSION_PATH=/
 SESSION_DOMAIN=null
-
-REDIS_HOST=127.0.0.1
-REDIS_PASSWORD=null
-REDIS_PORT=6379
-
-MAIL_MAILER=smtp
-MAIL_HOST=
-MAIL_PORT=
-MAIL_USERNAME=
-MAIL_PASSWORD=
-MAIL_ENCRYPTION=
-
-MAIL_FROM_NAME=
-MAIL_FROM_ADDRESS=
-
-PUSHER_APP_ID=
-PUSHER_KEY=
-PUSHER_SECRET=
-
+SANCTUM_STATEFUL_DOMAIN=
 TRUSTED_PROXIES="*"
-
-CRON_JOB_AUTH_TOKEN=""
-LOG_STACK=single
-
-PDF_DRIVER=dompdf
-GOTENBERG_HOST=
-GOTENBERG_PAPERSIZE=