fix: mark external memory and version APIs as basic

[legendecas]

Fixes#1594

[codecov-commenter]

Codecov Report

❌ Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.40%. Comparing base (ae2c23e) to head (7ab86a2).
⚠️ Report is 40 commits behind head on main.

Files with missing lines	Patch %	Lines
napi-inl.h	50.00%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #1597 +/- ##
==========================================
+ Coverage 64.42% 66.40% +1.97% 
==========================================
Files 3 3 Lines 2010 2143 +133 Branches 699 702 +3 ==========================================
+ Hits 1295 1423 +128 - Misses 147 150 +3 - Partials 568 570 +2 

☔ 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.

[NickNaso]

You should update the docs:

• https://github.com/nodejs/node-addon-api/blob/main/doc/memory_management.md#adjustexternalmemory
• https://github.com/nodejs/node-addon-api/blob/main/doc/version_management.md#versionmanagement

[legendecas]

Thanks for pointing it out, updated!

[mhdawson]

LGTM