FEATURE:[indicator] add adx indicator

[anywhy]

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[codecov]

Codecov Report

Attention: Patch coverage is 89.79592% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 22.65%. Comparing base (d58461d) to head (88281c1).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1604      +/-   ##
==========================================
+ Coverage   22.59%   22.65%   +0.05%     
==========================================
  Files         619      620       +1     
  Lines       44830    44881      +51     
==========================================
+ Hits        10130    10166      +36     
- Misses      33973    33986      +13     
- Partials      727      729       +2     

Files	Coverage Δ
pkg/bbgo/indicator_set.go	46.42% <0.00%> (-1.72%)	⬇️
pkg/indicator/v2/adx.go	93.61% <93.61%> (ø)

... and 1 file with indirect coverage changes

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Re-estimated karma: this pull request may get 384 BBG

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[c9s]

awesome, thanks!