[new feature] NumberKeyboard: support v-model

[chenjiahan]

No description provided.

[codecov-io]

Codecov Report

Merging #3531 into dev will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev    #3531      +/-   ##
==========================================
+ Coverage   92.82%   92.83%   +<.01%     
==========================================
  Files         118      118              
  Lines        2578     2581       +3     
  Branches      225      225              
==========================================
+ Hits         2393     2396       +3     
  Misses        160      160              
  Partials       25       25

Impacted Files	Coverage Δ
packages/number-keyboard/index.js	100% <100%> (ø)	⬆️

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