Add .gitlab-ci.yml

Why does this MR exist?

• Automatically verify as much as we can about the code.
• Does it compile? (this PR)
• Does it run? (future)
• Does tests pass? (future)
• Is the linter satisfied? (future)

How to review

• Look if Piipelines and jobs succeeds in gitlab-ci
• 

added 1 commit

• 161fe5c8 - Fix stage -> stages name error in .gitlab-ci.yml

Compare with previous version

added 1 commit

• 900be3e7 - Fix .gitlab-ci.yml

Compare with previous version

added 1 commit

• 0d48dc99 - Add tags to .gitlab-ci.yml

Compare with previous version

added 1 commit

• c483bd8b - Update .gitlab-ci.yml

Compare with previous version

added 1 commit

• 1a0cf9f1 - Chmod ./apt-install.sh

Compare with previous version

added 1 commit

• 9e0349ed - Change gitlab image to ubuntu

Compare with previous version

added 1 commit

• 8bcd5323 - Add git to apt-install.sh

Compare with previous version

added 1 commit

• e500bbb6 - Add DEBIAN_FRONTEND=noninteractive to apt-install

Compare with previous version

added 1 commit

• 3f703616 - Add apt-cache to gitlab-ci

Compare with previous version

added 1 commit

• 7cb80ac2 - Pass CXX to cmake in github-ci

Compare with previous version

added 1 commit

• 0a15673a - Add gcc to apt-install

Compare with previous version

added 1 commit

• abb30bea - Add build-essential to apt-install

Compare with previous version

added 1 commit

• cd7b8054 - Add set -e to apt-install

Compare with previous version

added 1 commit

• 968fadac - Add build folder to gitlab-ci

Compare with previous version

added 1 commit

• ca809cb5 - Remove cache to see if it does make a difference

Compare with previous version

added 1 commit

• a7815363 - Remove artifacts from gitlab-ci

Compare with previous version

added 1 commit

• 1c610e17 - Remove cat gzip step in gitlab-ci

Compare with previous version

added 1 commit

• 67c103e0 - Fix spelling mistake in github-ci

Compare with previous version

added 1 commit

• 17af4842 - Use clang instead of gcc in gitlab-ci

Compare with previous version

added 1 commit

• bf5494c1 - Update docker image

Compare with previous version