feat(InputItem): add moneyKeyboardHeader property

[micooz]

• Make sure that you follow antd's code convention.
• Run npm run lint and fix those errors before submitting in order to keep consistent code style.
• Rebase before creating a PR to keep commit history clear.
• Add some descriptions and refer relative issues for you PR.

Extra checklist:

• Update API docs for the component.
• Update/Add demo to demonstrate new feature.
• Update TypeScript definition for the component.
• Add unit tests for the feature.

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This change is 

[codecov]

Codecov Report

Merging #2820 into master will decrease coverage by 0.02%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #2820      +/-   ##
==========================================
- Coverage   59.37%   59.34%   -0.03%     
==========================================
  Files          92       92              
  Lines        2208     2209       +1     
  Branches      628      629       +1     
==========================================
  Hits         1311     1311              
- Misses        891      892       +1     
  Partials        6        6

Flag	Coverage Δ
#web	59.34% <0%> (-0.03%)	⬇️

Impacted Files	Coverage Δ
components/input-item/CustomInput.tsx	31.16% <ø> (ø)	⬆️
components/input-item/index.tsx	47.05% <ø> (ø)	⬆️
components/input-item/CustomKeyboard.tsx	4.54% <0%> (-0.11%)	⬇️

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