feat: add value parameter to input showCount.formatter

[JarvisArt]

Input 组件 showCount.formatter API 添加 value 参数
ant-design 相关 issues：ant-design/ant-design#36773
ant-design 相关 pr：ant-design/ant-design#36793

[codecov]

Codecov Report

Merging #20 (b389a8d) into master (d82402c) will not change coverage.
The diff coverage is 100.00%.

❗ Current head b389a8d differs from pull request most recent head 8886895. Consider uploading reports for the commit 8886895 to get more accurate results

@@            Coverage Diff            @@
##            master       #20   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          130       131    +1     
  Branches        44        43    -1     
=========================================
+ Hits           130       131    +1     

Impacted Files	Coverage Δ
src/Input.tsx	100.00% <100.00%> (ø)

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