gitlab-ci: Add test using modules from pypi

4 jobs for pip in 4 minutes and 7 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Build
passed build:deb #9480
librem5

00:01:50

passed build:docs #9479
librem5

00:02:09

 
  Test
passed test:download:deb #9481
librem5

00:01:21

passed test:download:pip #9482
librem5

00:01:57