ci: introduce tool for comparing nightly runs

ci: introduce tool for comparing nightly runs

nightly_compare.

Compare the two latest scheduled pipelines and provide information about the jobs you're interested in.

The job part reports:

• RED previously passing jobs
• YELLOW jobs which failed before, but continue to fail here is also available link to the previous failed run
• If no job failing, program exits.

If any failing job is found, after this phase, commit list between these two scheduled run is printed (you can also use the WebUI link).

Example: I care about all Adreno jobs passing and one Radeon (r300) with gallium-nine tests.

./bin/ci/nightly_compare.py --target ".*zink.*"

links are clickable within terminal.