Add '.gitlab-ci.yml'.

* .gitlab-ci.yml: New file.
3 jobs for master in 31 minutes and 5 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
passed #686727
lint

00:03:29

 
  Build
passed #686728
build_1_1_0

00:05:23

failed #686729
build_lastest

00:22:12

 
Name Stage Failure
failed
build_lastest Build
  1669:16  0 (raise-exception _ #:continuable? _)

ice-9/boot-9.scm:1669:16: In procedure raise-exception:
In procedure string-append: Wrong type (expecting string): #f
builder for `/gnu/store/0x9w0vi5k68lylpr91lvwgmzjqm5ksv1-libchop-0.0.2006-0.feb8f6b.drv' failed with exit code 1
build of /gnu/store/0x9w0vi5k68lylpr91lvwgmzjqm5ksv1-libchop-0.0.2006-0.feb8f6b.drv failed
View build log at '/var/log/guix/drvs/0x/9w0vi5k68lylpr91lvwgmzjqm5ksv1-libchop-0.0.2006-0.feb8f6b.drv.bz2'.
guix build: error: build of `/gnu/store/0x9w0vi5k68lylpr91lvwgmzjqm5ksv1-libchop-0.0.2006-0.feb8f6b.drv' failed
ERROR: Job failed: exit status 1