- add installGateway to app config
- update route names and groups
- remove `author_name` and `author_email` from `episodes` table
- remove `author_name` and `author_email` from `podcasts` table
- remove `owner_id` + add `created_by` and `updated_by` fields in `podcasts` and `episodes` tables
- remove unnecessary comments in database fields
- remove confirm password inputs from auth forms for better ux
- rename `pub_date` field to `published_at` and add publication time field in episode form
closes#14, #28
- generate .env file to configure instance's environment
- add phpdotenv dependency to verify .env file
- add AppSeeder to call all required seeds at once
- add env and superadmin form views using form helpers
closes#2