Add function for Diff. Depth Stream with an update speed of 100ms

[gabriel-milan]

Changelog

• Adds WsCombinedDepthServe100Ms in the same fashion as WsDepthServe100Ms

[codecov]

Codecov Report

Merging #340 (03a81e7) into master (afa0336) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #340      +/-   ##
==========================================
+ Coverage   73.19%   73.23%   +0.03%     
==========================================
  Files          60       60              
  Lines        5637     5645       +8     
==========================================
+ Hits         4126     4134       +8     
  Misses       1120     1120              
  Partials      391      391              

Impacted Files	Coverage Δ
v2/websocket_service.go	77.68% <100.00%> (+0.52%)	⬆️

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