feat: add [String] and [Number] option types

[dangreen]

Adds a list form to option: [String] and [Number] take the next argument as a whole and collect repeated options, instead of splitting it.

readOptions(
  option(alias('match', 'm'), [String]),   // ['**/*.{jpg,png}', '(min-width: 1000px)']
  option(alias('width', 'w'), Array)       // unchanged: '1920,1280' -> ['1920', '1280']
)

Why

Array splits every value by commas, so a value that carries commas of its own does not survive:

cli -m '**/*.{jpg,png}'                          # -> ['**/*.{jpg', 'png}']
cli -m '(min-width: 100px), (max-width: 200px)'  # -> two queries instead of one list

Both are ordinary inputs — a brace glob and a media query list — and there was no way to opt out of the splitting: String keeps the value whole but silently drops all but the last repeated option.

A consumer can work around it by re-joining and re-splitting brace-aware, but that only covers braces, and the alias plus camelCase/kebab-case matching lives in the non-exported matchArgName, so a custom reader means forking that part.

What changed

• ListConstructor and OptionConstructor types, plus the two branches in OptionValueType — [String] infers string[], [Number] infers number[];
• an Array.isArray(type) branch in option;
• PrimitiveConstructor is untouched, so nothing that used it before changes.

The pinned bundle size moved by 5 B (850 B → 855 B), so .size-limit.json is re-pinned to 900 B on the 0.05 kB step.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.47%. Comparing base (0594f8a) to head (ff5f11f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #396      +/-   ##
==========================================
+ Coverage   98.34%   98.47%   +0.12%     
==========================================
  Files           5        5              
  Lines         121      131      +10     
  Branches       31       35       +4     
==========================================
+ Hits          119      129      +10     
  Misses          2        2              

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