feat(ci): new package with code extracted from github-action

[matejchalk]

Bulk of #829

See new package's README.

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared target commit 4713a4b with source commit 12ecf6a.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🔴 47	🟡 55
Updates	🟡 77	🟡 75
Security	🟡 82	🟡 82
Code coverage	🟢 90	🟡 90
Custom checks	🟡 67	🟡 67	–
Accessibility	🟢 91	🟢 91	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Bug prevention	🟢 100	🟢 100	–
Code style	🟢 99	🟢 99	–

👍 2 groups improved, 👎 2 groups regressed, 👍 7 audits improved, 👎 4 audits regressed, 13 audits changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Lighthouse	Performance	🔴 47	🟡 55
JS Packages	NPM outdated dependencies	🟡 77	🟡 75
JS Packages	NPM audit	🟡 82	🟡 82
Code coverage	Code coverage metrics	🟢 90	🟡 90

16 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Largest Contentful Paint	🟨 3.6 s	🟨 3.0 s
Lighthouse	Speed Index	🟥 7.2 s	🟥 5.9 s
Lighthouse	First Contentful Paint	🟥 3.3 s	🟨 2.8 s
Lighthouse	First Meaningful Paint	🟨 3.3 s	🟨 2.8 s
JS Packages	Vulnerabilities for NPM dev dependencies.	🟥 13 vulnerabilities (4 high, 9 moderate)	🟥 12 vulnerabilities (4 high, 8 moderate)
Lighthouse	Time to Interactive	🟥 20.1 s	🟥 16.8 s
JS Packages	Outdated NPM prod dependencies.	🟨 13 outdated package versions (4 major, 4 minor, 5 patch)	🟨 15 outdated package versions (5 major, 5 minor, 5 patch)
Code coverage	Line coverage	🟩 91.5 %	🟩 90.7 %
JS Packages	Outdated NPM dev dependencies.	🟨 58 outdated package versions (33 major, 16 minor, 1 preminor, 7 patch, 1 prerelease)	🟨 58 outdated package versions (33 major, 16 minor, 1 preminor, 7 patch, 1 prerelease)
Code coverage	Branch coverage	🟨 85.3 %	🟨 84.8 %
Code coverage	Function coverage	🟩 92.4 %	🟩 92.3 %
Lighthouse	Minimizes main-thread work	🟥 25.7 s	🟥 19.4 s
Lighthouse	Total Blocking Time	🟥 12,520 ms	🟥 6,750 ms
Lighthouse	JavaScript execution time	🟥 14.3 s	🟥 9.1 s
Lighthouse	Metrics	🟩 100%	🟩 100%
Lighthouse	Eliminate render-blocking resources	🟥 Potential savings of 180 ms	🟥 Potential savings of 910 ms
Lighthouse	Max Potential First Input Delay	🟥 4,000 ms	🟥 3,310 ms
Lighthouse	Reduce unused CSS	🟥 Potential savings of 70 KiB	🟥 Potential savings of 70 KiB
Lighthouse	Avoids enormous network payloads	🟩 Total size was 1,825 KiB	🟩 Total size was 1,825 KiB
Lighthouse	Uses efficient cache policy on static assets	🟨 27 resources found	🟨 27 resources found
Lighthouse	Server Backend Latencies	🟩 80 ms	🟩 200 ms
Lighthouse	Network Round Trip Times	🟩 120 ms	🟩 70 ms
Lighthouse	Initial server response time was short	🟩 Root document took 470 ms	🟩 Root document took 450 ms
Lighthouse	Avoids an excessive DOM size	🟥 2,246 elements	🟥 2,247 elements

489 other audits are unchanged.

[BioPhoton]

Gitlab integration ahead it seems! Nice you started this PR.
More unit tests and some integration tests would round it up. :)

[BioPhoton]

🤩🚀🚀