imp(erc20): support registering multiple assets

[fedekunze]

Description

Closes: ENG-774

Context

Projects such as IBC bridges (Axelar, Gravity) or projects that have multiple coins (Osmosis, Regen eco-credits, etc) would like to register multiple tokens at once either as ERC20s or SDK Coins. Unfortunately, that is not supported at the moment and they need to create a single proposal for each denomination

• Implementation by @fedekunze
• Tests by @danburck
• Spec and docs by @danburck

[linear]

ENG-774 Support registering multiple denominations for ERC20s and Coins

Projects such as IBC bridges (Axelar, Gravity) or projects that have multiple coins (Osmosis, Regen eco-credits, etc) would like to register multiple tokens at once either as ERC20s or SDK Coins. Unfortunately, that is not supported at the moment and they need to create a single proposal for each denomination.

Scope:

• Use slices / arrays to register multiple coins or ERC20 tokens

[codecov]

Codecov Report

Merging #914 (0285ad3) into main (65c05a5) will decrease coverage by 4.70%.
The diff coverage is 27.83%.

❗ Current head 0285ad3 differs from pull request most recent head ba0c4b1. Consider uploading reports for the commit ba0c4b1 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #914      +/-   ##
==========================================
- Coverage   81.32%   76.62%   -4.71%     
==========================================
  Files         126      131       +5     
  Lines        7188     7751     +563     
==========================================
+ Hits         5846     5939      +93     
- Misses       1196     1665     +469     
- Partials      146      147       +1     

Impacted Files	Coverage Δ
x/erc20/client/cli/tx.go	0.00% <0.00%> (ø)
x/erc20/keeper/proposals.go	92.24% <ø> (-0.91%)	⬇️
x/erc20/proposal_handler.go	1.66% <0.00%> (-0.23%)	⬇️
x/erc20/types/proposal.go	92.13% <87.50%> (+0.67%)	⬆️
x/erc20/client/cli/utils.go	100.00% <100.00%> (ø)
app/upgrades/v9/upgrades.go	39.39% <0.00%> (-0.08%)	⬇️
app/forks.go	0.00% <0.00%> (ø)
app/upgrades/v9_1/upgrades.go
app/upgrades/v5/upgrades.go	56.73% <0.00%> (ø)
... and 8 more

[danburck]

@fedekunze nice implementation.

Will need to try the cli still and waiting for the full tests with several including batch registrations.

Can you also adjust the docs?

[fedekunze]

Thanks for taking over this @danburck!

[GAtom22]

Great job guys!! Left a few comments! 🚀

[fedekunze]

LGTM. Approved with minor comments

[danburck]

@fedekunze I separated the test suite refactor into this ticket