feat(nx-plugin): add crystal utils

[BioPhoton]

Preparation for #619

This PR includes:

• basic createNodes function
  • add configuration target to projects without a code-pushup config file
• relevant testing helpers for the createNodes function
• types, constants and utils for future logic
• test helper refactoring and documentation over tests

Command example:

• nx run-many --target=code-pushup--configuration --exclude=test-utils

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared target commit 8187c6a with source commit ba4f181.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🟡 55	🟡 56
Code coverage	🟡 90	🟡 90
Custom checks	🟡 67	🟡 67	–
Security	🟢 100	🟢 100	–
Updates	🟡 78	🟡 78	–
Accessibility	🟢 91	🟢 91	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Bug prevention	🟢 100	🟢 100	–
Code style	🟢 99	🟢 99	–

🗃️ Groups

👍 1 group improved, 👎 1 group regressed

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Lighthouse	Performance	🟡 55	🟡 56
Code coverage	Code coverage metrics	🟡 90	🟡 90

18 other groups are unchanged.

🛡️ Audits

👍 4 audits improved, 👎 4 audits regressed, 12 audits changed without impacting score

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Largest Contentful Paint	🟨 3.1 s	🟨 3.0 s
Lighthouse	First Contentful Paint	🟨 2.8 s	🟨 2.7 s
Lighthouse	Speed Index	🟨 5.5 s	🟨 5.7 s
Lighthouse	First Meaningful Paint	🟨 2.8 s	🟨 2.7 s
Lighthouse	Time to Interactive	🟥 14.1 s	🟥 15.5 s
Code coverage	Branch coverage	🟨 83.6 %	🟨 83.9 %
Code coverage	Function coverage	🟩 92.4 %	🟩 92.2 %
Code coverage	Line coverage	🟩 91.3 %	🟩 91.2 %
Lighthouse	JavaScript execution time	🟥 7.7 s	🟥 9.6 s
Lighthouse	Total Blocking Time	🟥 5,740 ms	🟥 7,190 ms
Lighthouse	Metrics	🟩 14119	🟩 15549
Lighthouse	Avoids enormous network payloads	🟩 Total size was 1,786 KiB	🟩 Total size was 1,785 KiB
Lighthouse	Max Potential First Input Delay	🟥 2,250 ms	🟥 3,470 ms
Lighthouse	Minimizes main-thread work	🟥 18.6 s	🟥 19.8 s
Lighthouse	Uses efficient cache policy on static assets	🟨 27 resources found	🟨 27 resources found
Lighthouse	Server Backend Latencies	🟩 130 ms	🟩 230 ms
Lighthouse	Initial server response time was short	🟩 Root document took 310 ms	🟩 Root document took 390 ms
Lighthouse	Eliminate render-blocking resources	🟥 Potential savings of 1,130 ms	🟥 Potential savings of 1,170 ms
Lighthouse	Avoids an excessive DOM size	🟥 2,191 elements	🟥 2,206 elements
Lighthouse	Network Round Trip Times	🟩 30 ms	🟩 20 ms

489 other audits are unchanged.