feat: Validator support promise

[zombieJ]

• Customize validator support promise
• Warning if use callback or not return promise
• Add related test case

Preview

🐒 StateForm-validate-perf

[codecov]

Codecov Report

Merging #5 into master will increase coverage by 52.53%.
The diff coverage is 95.65%.

@@             Coverage Diff             @@
##           master       #5       +/-   ##
===========================================
+ Coverage   16.72%   69.25%   +52.53%     
===========================================
  Files          13       13               
  Lines         616      631       +15     
  Branches      110      110               
===========================================
+ Hits          103      437      +334     
+ Misses        510      193      -317     
+ Partials        3        1        -2

Impacted Files	Coverage Δ
src/useForm.ts	65.38% <0%> (+40.86%)	⬆️
src/utils/validateUtil.ts	97.5% <100%> (+91.34%)	⬆️
src/Form.tsx	67.56% <0%> (+8.1%)	⬆️
src/utils/valueUtil.ts	56.14% <0%> (+42.1%)	⬆️
src/utils/NameMap.ts	51.72% <0%> (+48.27%)	⬆️
src/FormContext.tsx	72.22% <0%> (+55.55%)	⬆️
src/utils/typeUtil.ts	75% <0%> (+75%)	⬆️
src/Field.tsx	77.37% <0%> (+75.91%)	⬆️
... and 1 more

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[zombieJ]

OK to merge?