feat(utils/cookie): Ability to set a priority to cookies in setCookie options

[Beyondo]

Hono's setCookie did not have Priority and I recently needed that option so I forked hono and added it. Nothing's serious been changed—succesfully tested locally.

[EdamAme-x]

It may be necessary to write a simple test on this.

[Beyondo]

It may be necessary to write a simple test on this.

My bad—added priority to the seralization tests (3f0e470):

...
 ✓ src/utils/cookie.test.ts (27)
...
 Test Files  9 passed (9)
      Tests  414 passed | 3 skipped (417)
...

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.72%. Comparing base (4eb101d) to head (3f0e470).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/utils/cookie.ts	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3762      +/-   ##
==========================================
- Coverage   91.72%   91.72%   -0.01%     
==========================================
  Files         159      159              
  Lines       10178    10182       +4     
  Branches     2896     2870      -26     
==========================================
+ Hits         9336     9339       +3     
- Misses        841      842       +1     
  Partials        1        1              

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[yusukebe]

LGTM!

[yusukebe]

Hi @Beyondo

Thank you for the PR. Looks good. I'll merge this later and induce this change in the next patch release.