Merge branch 'improve_readme' into 'documentation'

Improve the main README and re-structure the repository.

See merge request !9
1 job for documentation in 15 seconds
Status Name Job ID Coverage
  Deploy
failed pages #75684

00:00:15

 
Name Stage Failure
failed
pages Deploy There has been a runner system failure, please try again
ERROR: Preparation failed: Error: No such image: hasa_ci:latest (docker.go:160:0s)
Will be retried in 3s ...
Using Docker executor with image hasa_ci:latest ...
ERROR: Preparation failed: Error: No such image: hasa_ci:latest (docker.go:160:0s)
Will be retried in 3s ...
Using Docker executor with image hasa_ci:latest ...
ERROR: Preparation failed: Error: No such image: hasa_ci:latest (docker.go:160:0s)
Will be retried in 3s ...
ERROR: Job failed (system failure): Error: No such image: hasa_ci:latest (docker.go:160:0s)