Always set go.mod/go.sum file line endings to LF

[thrasher-]

Description

Introduces a .gitattributes file which sets go.mod/go.sum line endings to LF based off the discussion in: golang/go#31870

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

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

[codecov]

Codecov Report

Merging #391 into engine will increase coverage by 0.67%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           engine     #391      +/-   ##
==========================================
+ Coverage   41.42%   42.09%   +0.67%     
==========================================
  Files         167      167              
  Lines       38207    39900    +1693     
==========================================
+ Hits        15827    16796     +969     
- Misses      21274    21931     +657     
- Partials     1106     1173      +67

Impacted Files	Coverage Δ
exchanges/coinbasepro/coinbasepro.go	34.2% <0%> (-0.55%)	⬇️
exchanges/zb/zb.go	71.42% <0%> (-0.37%)	⬇️
exchanges/btcmarkets/btcmarkets.go	58.72% <0%> (-0.2%)	⬇️
exchanges/huobi/huobi_websocket.go	0% <0%> (ø)	⬆️
engine/orders.go	0% <0%> (ø)	⬆️
logger/logger_types.go	100% <0%> (ø)	⬆️
exchanges/asset/asset.go	100% <0%> (ø)	⬆️
exchanges/okgroup/okgroup.go	11.83% <0%> (+0.27%)	⬆️
dispatch/mux.go	94.11% <0%> (+0.36%)	⬆️
currency/code.go	75.49% <0%> (+0.4%)	⬆️
... and 15 more

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[shazbert]

tACK!

[gloriousCode]

tACK. May I never have to revert go.mod changes again

[xtda]

👍
tested approved