feat(Calendar): add scrollToDate method

[chenjiahan]

#7833

[github-actions]

🎊 PR Preview 5ac6996 has been successfully built and deployed to https://youzan-vant-preview-pr-7847.surge.sh

🕐 Build time: 79.616s

_{🤖 By surge-preview}

[codecov-io]

Codecov Report

Merging #7847 (eec5b0c) into 2.x (3344e31) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              2.x    #7847      +/-   ##
==========================================
+ Coverage   91.05%   91.08%   +0.02%     
==========================================
  Files         182      182              
  Lines        5044     5045       +1     
  Branches      295      295              
==========================================
+ Hits         4593     4595       +2     
+ Misses        417      416       -1     
  Partials       34       34              

Impacted Files	Coverage Δ
src/calendar/index.js	95.36% <100.00%> (+0.66%)	⬆️
src/loading/index.tsx	100.00% <0.00%> (ø)

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