update composer dependencies to latest

Users may choose between filesystem (FS) or S3 to store and manage their media files

closes #193

* add DashboardCard component
* add instance wide podcasts and episodes numbers
* add app.storageLimit environment variable
* divide bytes by 1000 instead of 1024 in stats sql queries

closes #216

- update CI4 to v4.1.9's stable production package
- update php and js dependencies to latest

- rename podlibre to adaures
- rename castopod-host to castopod
- simplify README and redirect to docs site
- move INSTALL and UPDATE docs
- add new gitlabci pipeline to deploy docs
- upgrade node to v16 in Dockerfile

- create Admin, Analytics, Auth, Fediverse and Install modules in the root modules/ folder
- rename
ActivityPub to Fediverse