test: introduce GitLab-CI functionality

.ansible-lint

.config/molecule/config.yml

.githooks/pre-commit

.gitignore

.gitlab-ci.yml

.yamllint

defaults/main.yml

meta/main.yml

molecule/default

molecule/default/molecule.yml

molecule/default/playbook.yml

molecule/default/prepare.yml

molecule/default/tests/test_default.py

molecule/resources/playbooks/INSTALL.rst

molecule/resources/playbooks/README.md

molecule/resources/playbooks/converge.yml

molecule/resources/playbooks/prepare.yml

molecule/resources/playbooks/verify.yml

molecule/virtualbox_centos7/molecule.yml

molecule/virtualbox_rocky8/molecule.yml