BNBBurnService feature

[edward-yakop]

Implement the following REST APIs:

• https://binance-docs.github.io/apidocs/spot/en/#toggle-bnb-burn-on-spot-trade-and-margin-interest-user_data
• https://binance-docs.github.io/apidocs/spot/en/#get-bnb-burn-status-user_data

[codecov[bot]]

Codecov Report

Merging #396 (3cc7357) into master (5808316) will decrease coverage by 0.15%. The diff coverage is 78.94%.

@@            Coverage Diff             @@
##           master     #396      +/-   ##
==========================================
- Coverage   70.13%   69.98%   -0.16%     
==========================================
  Files          69       74       +5     
  Lines        6563     6819     +256     
==========================================
+ Hits         4603     4772     +169     
- Misses       1477     1548      +71     
- Partials      483      499      +16     

Impacted Files	Coverage Δ
v2/bnb_burn_service.go	76.47% <76.47%> (ø)
v2/client.go	80.81% <100.00%> (+0.36%)	:arrow_up:
v2/ticker_service.go	74.00% <0.00%> (-4.95%)	:arrow_down:
v2/futures/openinterest_service.go	84.31% <0.00%> (ø)
v2/futures/index_price_kline_service.go	0.00% <0.00%> (ø)
v2/futures/mark_price_kline_service.go	85.41% <0.00%> (ø)
v2/futures/longshort_ratio_service.go	88.57% <0.00%> (ø)
v2/futures/client.go	75.98% <0.00%> (+0.20%)	:arrow_up:

:mega: Codecov can now indicate which changes are the most critical in Pull Requests. Learn more