feat(models): define tree data structure for audit details

[matejchalk]

Closes #994

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared current commit fc69806 with previous commit 9cd4a7f.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🟡 51	🔴 49
Documentation	🔴 23	🔴 23
Code coverage	🟢 90	🟢 90
Security	🟡 62	🟡 62	–
Updates	🟡 84	🟡 84	–
Accessibility	🟢 92	🟢 92	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Type Safety	🟢 100	🟢 100	–
Bug prevention	🟢 100	🟢 100	–
Miscellaneous	🟢 100	🟢 100	–
Code style	🟢 100	🟢 100	–

👎 3 groups regressed, 👍 2 audits improved, 👎 6 audits regressed, 12 audits changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Lighthouse	Performance	🟡 51	🔴 49
JSDoc coverage	Documentation coverage	🔴 23	🔴 23
Code coverage	Code coverage metrics	🟢 90	🟢 90

18 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Speed Index	🟨 5.6 s	🟥 5.9 s
Lighthouse	Total Blocking Time	🟥 2,550 ms	🟥 3,500 ms
Lighthouse	Largest Contentful Paint	🟨 3.8 s	🟨 3.8 s
Lighthouse	First Contentful Paint	🟨 2.9 s	🟨 2.8 s
JSDoc coverage	Types coverage	🟥 212 undocumented types	🟥 218 undocumented types
JSDoc coverage	Variables coverage	🟥 204 undocumented variables	🟥 214 undocumented variables
Code coverage	Line coverage	🟨 89.8 %	🟨 89.9 %
Code coverage	Branch coverage	🟨 85.9 %	🟨 85.9 %
Lighthouse	Minimizes main-thread work	🟥 12.6 s	🟥 15.1 s
Lighthouse	JavaScript execution time	🟥 5.7 s	🟥 6.2 s
Lighthouse	Eliminate render-blocking resources	🟥 Potential savings of 1,060 ms	🟥 Potential savings of 760 ms
Lighthouse	Time to Interactive	🟥 12.7 s	🟥 13.0 s
Lighthouse	Metrics	🟩 100%	🟩 100%
Lighthouse	Avoids enormous network payloads	🟩 Total size was 1,832 KiB	🟩 Total size was 1,832 KiB
Lighthouse	Uses efficient cache policy on static assets	🟨 30 resources found	🟨 30 resources found
Lighthouse	Reduce unused CSS	🟥 Potential savings of 67 KiB	🟥 Potential savings of 67 KiB
Lighthouse	Max Potential First Input Delay	🟥 1,740 ms	🟥 1,830 ms
Lighthouse	Server Backend Latencies	🟩 210 ms	🟩 150 ms
Lighthouse	Initial server response time was short	🟩 Root document took 510 ms	🟩 Root document took 470 ms
Lighthouse	Network Round Trip Times	🟩 60 ms	🟩 40 ms

585 other audits are unchanged.