HitBTC: Add Subscription Configuration

[gbjk]

HitBTC

• Add Subscription configuration
• Upgrade test configuration

New Library Dependencies

• sprig ( Also included in 4 other template PRs )

Type of change

• New feature (non-breaking change which adds functionality)

[codecov]

Codecov Report

Attention: Patch coverage is 50.94340% with 26 lines in your changes missing coverage. Please review.

Project coverage is 36.51%. Comparing base (cb6b342) to head (4b6d747).

Files with missing lines	Patch %	Lines
exchanges/hitbtc/hitbtc_websocket.go	45.83%	23 Missing and 3 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1639   +/-   ##
=======================================
  Coverage   36.50%   36.51%           
=======================================
  Files         414      414           
  Lines      179353   179322   -31     
=======================================
- Hits        65477    65471    -6     
+ Misses     106006   105965   -41     
- Partials     7870     7886   +16     

Files with missing lines	Coverage Δ
exchanges/hitbtc/hitbtc_wrapper.go	45.73% <100.00%> (+0.36%)	⬆️
exchanges/subscription/subscription.go	100.00% <ø> (ø)
exchanges/hitbtc/hitbtc_websocket.go	29.67% <45.83%> (+4.46%)	⬆️

... and 19 files with indirect coverage changes

[gloriousCode]

Nice, tested auth and unauth. just one thing

[gloriousCode]

tACK!

[shazbert]

Thanks 🖖 tACK.

[shazbert]

NOTE 4 ME: Might be able to make this entire change dynamic across all exchanges in #1619 reduce implementation toil.

[thrasher-]

tACK public subs, utACK private. Working well!