fix: correct broken symlinks in frontends/nextjs/scripts

- Fix check-function-coverage.js pointing to wrong path
- Fix generate-test-coverage-report.js symlink
- Fix setup-packages.cjs symlink
- All now correctly point to ../../../tools/

frontends/nextjs/scripts/check-function-coverage.js

@@ -1 +1 @@
-../../../scripts/check-function-coverage.js
+../../../tools/check-function-coverage.js

frontends/nextjs/scripts/generate-test-coverage-report.js

@@ -1 +1 @@
-../../../scripts/generate-test-coverage-report.js
+../../../tools/generate-test-coverage-report.js

frontends/nextjs/scripts/setup-packages.cjs

@@ -1 +1 @@
-../../../scripts/setup-packages.cjs
+../../../tools/setup-packages.cjs