feat: add SharedArrayBuffer

[KevinEady]

• Add support for Napi::SharedArrayBuffer
• Add Value::IsSharedArrayBuffer()
• Update docs and tests

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.48%. Comparing base (60d439e) to head (6d1aa6c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1688   +/-   ##
=======================================
  Coverage   63.48%   63.48%           
=======================================
  Files           3        3           
  Lines        2046     2046           
  Branches      728      728           
=======================================
  Hits         1299     1299           
  Misses        162      162           
  Partials      585      585           

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[KevinEady]

We see in the tests:

• standard 24.x: Skipped (no SharedArrayBuffer support) [job]
• experimental 24.x: no skipped message [job]
• experimental 20.x: Skipped (no SharedArrayBuffer support) as the underlying node-api feature is not in this version [job]

[KevinEady]

Non-experimental Jenkins CI builds

Version	Build	Status
25	CI not configured	-
24	https://ci.nodejs.org/job/node-test-node-addon-api-new/11032/	✅
22	https://ci.nodejs.org/job/node-test-node-addon-api-new/11033/	✅
20	https://ci.nodejs.org/job/node-test-node-addon-api-new/11034/	✅

[legendecas]

Would you mind adding a test case in https://github.com/nodejs/node-addon-api/blob/main/test/value_type_cast.cc as well? Or we can add it as a follow-up.

[KevinEady]

@legendecas, I added the value_type_cast test! PTAL