feat(file-router): implement lazy route generation

[Lodin]

Resolves #3264.

[codecov]

Codecov Report

Attention: Patch coverage is 91.13924% with 14 lines in your changes missing coverage. Please review.

Project coverage is 86.63%. Comparing base (540b822) to head (32b3b05).

Files with missing lines	Patch %	Lines
...r-utils/src/dependencies/StatementRecordManager.ts	58.82%	7 Missing ⚠️
.../generator-utils/src/dependencies/ExportManager.ts	0.00%	3 Missing ⚠️
packages/ts/file-router/src/runtime/createRoute.ts	92.00%	1 Missing and 1 partial ⚠️
...ile-router/src/vite-plugin/createRoutesFromMeta.ts	97.77%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3365   +/-   ##
=======================================
  Coverage   86.62%   86.63%           
=======================================
  Files         115      115           
  Lines        8163     8205   +42     
  Branches     1261     1264    +3     
=======================================
+ Hits         7071     7108   +37     
- Misses       1077     1080    +3     
- Partials       15       17    +2     

Flag	Coverage Δ
unittests	86.63% <91.13%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[Lodin]

Quality Gate failed

Failed conditions 10.0% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

Ignore this failure because it complains about code duplication in fixtures which is acceptable.

[sonarqubecloud]

Quality Gate failed

Failed conditions
3.1% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud