refactor: use type imports throughout codebase

[matejchalk]

Motivation - see Consistent Type Imports and Exports: Why and How.

Enabled verbatimModuleSyntax flag and autofixed imports and exports by temporarily enabling consistent-type-imports and consistent-type-exports ESLint rules. The TypeScript ESLint docs don't recommend combining lint rules with compiler flag, so I went with compiler flag for all ESM-compatible projects. The CommonJS-only nx-plugin is the exception, so lint rules are used instead of compiler flag in this case.

IDEs should automatically suggest type imports and provide suggestions when there's an error (tested with VSCode), so it should make for good DX :crossed_fingers:

Also added an ESLint config for tools folder, since quite a lot of code exists there which could benefit from linting. It's not enforced in CI as it's not an Nx project, but the errors and warnings are now shown in IDE.

Almost all the changed files in this PR are result of autofix, the only other changes are to files:

• tsconfig.base.json
• .eslintrc.json
• packages/nx-plugin/.eslintrc.json
• packages/nx-plugin/tsconfig.json
• tools/.eslintrc.json

[github-actions[bot]]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared target commit c2b66917958cfbcc8c268490bfd3d65d4a185623 with source commit 2db9a5c4c3b26365bc276c5c11b350a32e9d5f06.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🟡 51	🟡 54
Code style	🟢 99	🟢 99
Code coverage	🟡 90	🟡 90
Custom checks	🟡 67	🟡 67	–
Security	🟢 98	🟢 98	–
Updates	🟡 78	🟡 78	–
Accessibility	🟢 91	🟢 91	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Bug prevention	🟢 100	🟢 100	–

👍 2 groups improved, 👎 1 group regressed, 👍 5 audits improved, 👎 1 audit regressed, 12 audits changed without impacting score

## 🗃️ Groups | 🔌 Plugin | 🗃️ Group | ⭐ Previous score | ⭐ Current score | 🔄 Score change | | :--------------------------------------------------------------------------- | :-------------------- | :--------------: | :-------------: | :--------------------------------------------------------------: | | Lighthouse | Performance | 🟡 51 | 🟡 **54** |  | | [ESLint](https://www.npmjs.com/package/@code-pushup/eslint-plugin) | Suggestions | 🟢 99 | 🟢 **99** |  | | [Code coverage](https://www.npmjs.com/package/@code-pushup/coverage-plugin/) | Code coverage metrics | 🟡 90 | 🟡 **90** |  | 17 other groups are unchanged. ## 🛡️ Audits | 🔌 Plugin | 🛡️ Audit | 📏 Previous value | 📏 Current value | 🔄 Value change | | :--------------------------------------------------------------------------- | :------------------------------------------- | :------------------------------: | :---------------------------------: | :--------------------------------------------------------------------------------: | | Lighthouse | Speed Index | 🟥 6.2 s | 🟨 **5.6 s** |  | | Lighthouse | Largest Contentful Paint | 🟨 3.4 s | 🟨 **3.2 s** |  | | Lighthouse | First Meaningful Paint | 🟨 3.0 s | 🟨 **2.9 s** |  | | Lighthouse | Time to Interactive | 🟥 17.6 s | 🟥 **15.9 s** |  | | Lighthouse | First Contentful Paint | 🟨 2.9 s | 🟨 **2.9 s** |  | | [Code coverage](https://www.npmjs.com/package/@code-pushup/coverage-plugin/) | Line coverage | 🟩 91.9 % | 🟩 **91.9 %** |  | | Lighthouse | Total Blocking Time | 🟥 10,920 ms | 🟥 **6,920 ms** |  | | Lighthouse | Minimizes main-thread work | 🟥 22.7 s | 🟥 **18.7 s** |  | | Lighthouse | JavaScript execution time | 🟥 10.6 s | 🟥 **8.0 s** |  | | Lighthouse | Metrics | 🟩 100% | 🟩 **100%** |  | | Lighthouse | Max Potential First Input Delay | 🟥 2,920 ms | 🟥 **2,220 ms** |  | | Lighthouse | Uses efficient cache policy on static assets | 🟨 27 resources found | 🟨 **27 resources found** |  | | Lighthouse | Eliminate render-blocking resources | 🟥 Potential savings of 1,000 ms | 🟥 **Potential savings of 860 ms** |  | | Lighthouse | Avoids enormous network payloads | 🟩 Total size was 1,808 KiB | 🟩 **Total size was 1,808 KiB** |  | | Lighthouse | Server Backend Latencies | 🟩 240 ms | 🟩 **200 ms** |  | | Lighthouse | Reduce unused CSS | 🟥 Potential savings of 106 KiB | 🟥 **Potential savings of 106 KiB** |  | | Lighthouse | Initial server response time was short | 🟩 Root document took 520 ms | 🟩 **Root document took 510 ms** |  | | Lighthouse | Network Round Trip Times | 🟩 70 ms | 🟩 **70 ms** |  | 492 other audits are unchanged.