feat: add iterateTokens method

[fisker]

PR Checklist

• Addresses an existing open issue: 🚀 Feature: Replace forEach... methods with Iterables #755
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Part of #755, this one is unlike forEachComments, we only need yield tokens.
We can decide what to do with the comments in a follow-up pr.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.13%. Comparing base (e547759) to head (f0c5219).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #756   +/-   ##
=======================================
  Coverage   61.13%   61.13%           
=======================================
  Files          35       35           
  Lines        2923     2923           
  Branches      467      468    +1     
=======================================
  Hits         1787     1787           
  Misses       1136     1136           

Flag	Coverage Δ
4.8.4	59.73% <100.00%> (ø)
latest	60.38% <100.00%> (ø)

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[kirkwaiblinger]

I like this approach. Nice job on keeping the diff so minimal 👌

[JoshuaKGoldberg]

Great! Sorry for taking so long on this without explaining why - IIRC I'd wanted another person working on this package to take a look (and didn't want to leave them out of reviewing). Thanks for hopping on the review @kirkwaiblinger.

[JoshuaKGoldberg]

CI is very borked on main. Ignoring it.

[JoshuaKGoldberg]

Released in ts-api-utils@2.2.0. 🚀 Thanks as always @fisker!