chore: add a dummy package in the server bundle

[XiaoxuanLu]

Problem

If user has a package.json in the parent directory structure, then nodejs can load Flare with the incorrect module system

Solution

Add a dummy package to serve as the 'nearest parent package.json file' to force Node.js to treat Flare as CommonJS.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.73%. Comparing base (9e08fe1) to head (2fe0c73).

Additional details and impacted files

@@ Coverage Diff @@ ## main #2472 +/- ## ========================================== + Coverage 62.71% 62.73% +0.01%  ========================================== Files 266 266 Lines 59697 59697 Branches 3840 3842 +2 ========================================== + Hits 37441 37451 +10  + Misses 22180 22170 -10  Partials 76 76 

Flag	Coverage Δ
unittests	62.73% <ø> (+0.01%)	⬆️

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