feat(hono/testing): Allow passing hc options to testClient

[kbrgl]

This PR makes it possible to pass hc options to testClient. This excludes the fetch option, which is always passed by the testClient; removing it obviates the need for testClient entirely.

I needed this because I wanted my testClient to always pass certain headers for authentication in dev mode.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.28%. Comparing base (882e75a) to head (8462e03).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4059      +/-   ##
==========================================
- Coverage   91.32%   91.28%   -0.04%     
==========================================
  Files         168      168              
  Lines       10684    10769      +85     
  Branches     3032     3144     +112     
==========================================
+ Hits         9757     9831      +74     
- Misses        926      937      +11     
  Partials        1        1              

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[yusukebe]

LGTM!

[yusukebe]

Hi @kbrgl

This is a good feature. I'll merge this later, but I am wondering if we should ship this as a patch release or a minor release. I'll decide later. Thanks!

[kbrgl]

@yusukebe Thank you for the review! This seems to be a minor release to me since it adds a small feature, but will defer to you on the best practices for your project. Thanks for making Hono! 😄