add cronos config

[thomas-nguy]

Add configuration for cronos network

[codecov[bot]]

Codecov Report

Merging #412 (3ad0d9c) into dev (6d07cb3) will decrease coverage by 0.03%. The diff coverage is 81.81%.

@@            Coverage Diff             @@
##              dev     #412      +/-   ##
==========================================
- Coverage   98.02%   98.00%   -0.03%     
==========================================
  Files         161      161              
  Lines        7596     7605       +9     
  Branches      571      574       +3     
==========================================
+ Hits         7446     7453       +7     
- Misses        150      152       +2     

Impacted Files	Coverage Δ
lib/src/coin/v2.coin/v2.coin.ts	96.15% <80.00%> (-0.95%)	:arrow_down:
lib/src/coin/ow.types.ts	88.88% <100.00%> (ø)

... and 1 file with indirect coverage changes

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