build: add circleci & gitlabci

This does some basic formal testing, just like done for packages.git.
Later compiling of device tree files, checking kmods or other more
specific tests could be done. However this is a first step to CI.

Signed-off-by: Paul Spooren <mail@aparcar.org>
1 job for ci in 15 seconds
Status Job ID Name Coverage
  Test
passed #353
doc

00:00:15