exchanges: OkCoin Update

[samuael]

Selam Everyone

This PR includes comprehensive updates to types, web-socket handlers, wrapper functions, and some endpoint methods. I have conducted live testing on web socket push data handling including the order book. Cleaned up the codebase by removing the okcoin_convert.go file and replaced timestamp information with 'convert.ExchangeTime' for improved clarity and efficiency.

Fixes # (issue)

Type of change

Please delete options that are not relevant and add an x in [] as the item is complete.

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How has this been tested

• [x] go test ./... -race
• [x] golangci-lint run
• [x] Test X

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented on my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation and regenerated documentation via the documentation tool
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally and on Github Actions with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[samuael]

Lovely tACK. Thanks Sam! 🚀

🙏🏽🫡

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 66.33166% with 67 lines in your changes are missing coverage. Please review.

Project coverage is 35.87%. Comparing base (954aa02) to head (80e9b3c). Report is 13 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #1436    +/-   ##
========================================
  Coverage   35.87%   35.87%            
========================================
  Files         411      410     -1     
  Lines      177444   177302   -142     
========================================
- Hits        63651    63611    -40     
+ Misses     106029   105942    -87     
+ Partials     7764     7749    -15     

Files	Coverage Δ
exchanges/okcoin/okcoin_ratelimit.go	46.72% <100.00%> (ø)
exchanges/okcoin/okcoin_types.go	100.00% <100.00%> (+58.57%)	:arrow_up:
exchanges/okcoin/okcoin_wrapper.go	30.33% <66.66%> (+0.40%)	:arrow_up:
exchanges/okcoin/okcoin_ws_trade.go	0.00% <0.00%> (ø)
exchanges/okcoin/okcoin_websocket.go	39.01% <62.50%> (-1.76%)	:arrow_down:
exchanges/okcoin/okcoin.go	15.82% <20.00%> (ø)

... and 12 files with indirect coverage changes

[samuael]

I couldn't get this error message whenever I tried. The rate limit value I used is also correct!