Case insensitive chain name

[dadamu]

Description

This PR makes the name of ChainConfig case insensitive.
Closes #526

Checklist

• Targeted PR against correct branch.
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Wrote unit tests.
• Wrote integration tests (simulation & CLI).
• Updated the documentation.
• Added an entry to the CHANGELOG.md file.
• Re-reviewed Files changed in the Github PR explorer.

[codecov]

Codecov Report

Merging #533 (0b78076) into master (93f8514) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 0b78076 differs from pull request most recent head 37fbc2f. Consider uploading reports for the commit 37fbc2f to get more accurate results

@@           Coverage Diff           @@
##           master     #533   +/-   ##
=======================================
  Coverage   81.81%   81.82%           
=======================================
  Files          91       91           
  Lines        4734     4736    +2     
=======================================
+ Hits         3873     3875    +2     
  Misses        667      667           
  Partials      194      194           

Impacted Files	Coverage Δ
x/profiles/types/models_chain_links.go	87.00% <100.00%> (+0.26%)	⬆️

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[RiccardoM]

The implementation looks good, but I'm having a hard time deciding whether this is worth or it might have some backslash in the future

[RiccardoM]

I think this should be removed if we want the Validate method to fail

[leobragaz]

@RiccardoM why backslash? I don't think we will see chains where name differs only for some case letter.