feat: make getCells synchronous

[AyushAgrawal-A2]

related to #1447
closes #1409
closes #1114

This pr is meant to explore usage of Atomics and SharedArrayBuffer, for communication between workers.
Using this we can block(sleep) a worker thread and execute synchronously, instead of using async / await

Pros:

• c, cell, cells, getCells, rel_cell and rc works now synchronously without using async / await. This clear ambiguity of when to add async / await, for enclosing functions (error 'await' outside async function for functions with cell in them #1114).

Cons:

• Overhead due to encoding and decoding from shared memory.
• To use SharedArrayBuffer, we need to meet the Security requirements.
  • For local dev - Chrome treats localhost / 127.0.0.1 as secure context. COOP, COEP headers are added in vite.config.js. So everything works without switching to https.
  • For deployment - It will require all deployment to be secure and for quadratic-client we need to add headers mentioned in Security requirements.

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[davidfig]

This works great. Outside of the necessary server changes, is there anything else that makes this a POC and not ready for review? We'll also need this ported to JS so we can remove the await requirement there as well.

[AyushAgrawal-A2]

@davidfig
ready for review

[davidfig]

Awesome. Works wonderfully.

[davidfig]

Please resolve conflicts (hopefully last one)

[AyushAgrawal-A2]

Please resolve conflicts (hopefully last one)

@davidfig
done

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.78%. Comparing base (f1e0702) to head (cb99c96).
Report is 516 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1450      +/-   ##
==========================================
- Coverage   90.92%   89.78%   -1.14%     
==========================================
  Files         180      185       +5     
  Lines       34169    34763     +594     
==========================================
+ Hits        31067    31211     +144     
- Misses       3102     3552     +450     

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