feat: add isAsyncIterable and isIntegerInRange type/value inspection helpers

[nev21]

• isAsyncIterable(value): checks for Symbol.asyncIterator presence using the existing well-known symbol abstraction; safe in ES5 environments where the symbol is absent (returns false). Located in iterator/iterator.ts.
• isIntegerInRange(value, min, max): validates that value, min, and max are all integers and that min <= value <= max. Built on existing isInteger helper. Located in helpers/number.ts.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.45%. Comparing base (ccac111) to head (e4ae405).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #536   +/-   ##
=======================================
  Coverage   99.45%   99.45%           
=======================================
  Files         142      142           
  Lines        4187     4196    +9     
  Branches      922      926    +4     
=======================================
+ Hits         4164     4173    +9     
  Misses         23       23           

Files with missing lines	Coverage Δ
lib/src/helpers/number.ts	96.96% <100.00%> (+0.41%)	⬆️
lib/src/iterator/iterator.ts	100.00% <100.00%> (ø)

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[Copilot]

Pull request overview

This PR adds two new inspection helpers to @nevware21/ts-utils—one for identifying async iterables and one for validating integers within an inclusive range—along with accompanying tests and documentation updates.

Changes:

• Add isAsyncIterable() to iterator helpers and export it from the package entrypoint.
• Add isIntegerInRange() to number helpers, export it, and add common tests.
• Update docs/backlog and bump dev tool versions (api-extractor, typedoc); add ESNext iterator tests for async iterables.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
package.json	Bumps devDependencies for api-extractor and typedoc.
lib/src/iterator/iterator.ts	Adds isAsyncIterable() type/value inspection helper.
lib/src/helpers/number.ts	Adds isIntegerInRange() helper built on isInteger().
lib/src/index.ts	Exports the new helpers from the root entrypoint; also changes string exports.
lib/test/src/esnext/iterator/iterator.test.ts	Adds ESNext tests covering isAsyncIterable() behavior.
lib/test/src/common/helpers/number.test.ts	Adds common tests covering isIntegerInRange() behavior and edge cases.
docs/feature-backlog.md	Removes backlog entries that are now implemented and adjusts section heading.
docs/README.md	Updates docs README feature list to mention the new helpers.
README.md	Updates the function index to include links for isAsyncIterable() and isIntegerInRange().

[nevware21-bot]

Approved by nevware21-bot