FEATURE: [bitget] use v2 symbols

[bailantaotao]

https://www.bitget.com/zh-CN/api-doc/spot/market/Get-Symbols

The big difference between v1 and v2 is that in v2, there is no post-fix on the symbol(e.q. BTCUSDT_SPBL), so we don't need to handle it

[bbgokarma-bot]

Welcome back! @bailantaotao, This pull request may get 1010 BBG.

[bbgokarma-bot]

Re-estimated karma: this pull request may get 452 BBG

[codecov]

Codecov Report

Merging #1413 (5e5b8e1) into main (868d48b) will increase coverage by 0.00%.
The diff coverage is 54.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1413   +/-   ##
=======================================
  Coverage   21.23%   21.23%           
=======================================
  Files         579      580    +1     
  Lines       42017    42016    -1     
=======================================
  Hits         8924     8924           
+ Misses      32445    32444    -1     
  Partials      648      648           

Files	Coverage Δ
pkg/exchange/bitget/convert.go	90.97% <85.71%> (+0.67%)	⬆️
...xchange/bitget/bitgetapi/v2/get_symbols_request.go	0.00% <0.00%> (ø)
pkg/exchange/bitget/exchange.go	0.00% <0.00%> (ø)

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[bbgokarma-bot]

Re-estimated karma: this pull request may get 693 BBG

[bbgokarma-bot]

Re-estimated karma: this pull request may get 467 BBG

[bbgokarma-bot]

Hi @bailantaotao,

Well done! 472 BBG has been sent to your polygon wallet. Please check the following tx:

https://polygonscan.com/tx/0xeb4c1fe4136e5e75ff684c7961da47ea39ee6dee8a375a2bb9fcae5d5e049ad4

Thank you for your contribution!