feat!: allow amount-specific control of collateral

[toteki]

Description

Removes true/false collateral settings.

Instead, users add or remove exact amounts of uTokens as collateral.

This will allow more fine-grained control, helping advanced users as well as possibly preparing us for more advanced liquidity pool design.

Closes #904

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[toteki]

Couple tweaks to the sim tests still needed

[codecov-commenter]

Codecov Report

Merging #1029 (165bf5c) into main (1401e8d) will increase coverage by 0.40%.
The diff coverage is 39.48%.

@@            Coverage Diff             @@
##             main    #1029      +/-   ##
==========================================
+ Coverage   43.31%   43.72%   +0.40%     
==========================================
  Files          65       65              
  Lines        8381     8298      -83     
==========================================
- Hits         3630     3628       -2     
+ Misses       4502     4421      -81     
  Partials      249      249              

Impacted Files	Coverage Δ
x/leverage/client/cli/query.go	0.00% <ø> (ø)
x/leverage/client/cli/tx.go	0.00% <0.00%> (ø)
x/leverage/keeper/genesis.go	2.58% <ø> (+0.42%)	⬆️
x/leverage/keeper/grpc_query.go	5.91% <ø> (+0.31%)	⬆️
x/leverage/keeper/msg_server.go	0.84% <0.00%> (-0.12%)	⬇️
x/leverage/keeper/store.go	70.52% <ø> (+1.43%)	⬆️
x/leverage/simulation/decoder.go	0.00% <ø> (ø)
x/leverage/simulation/genesis.go	0.00% <ø> (ø)
x/leverage/types/genesis.go	9.19% <0.00%> (+1.19%)	⬆️
x/leverage/types/keys.go	52.38% <ø> (+1.83%)	⬆️
... and 11 more

[RafilxTenfen]

The protobuf / breakage is expected to fail?

[toteki]

The protobuf / breakage is expected to fail?

Yeah, this breaks the API of Set -> Add/Remove Collateral

[RafilxTenfen]

So, right now if someone has already supplied 1k token and set 1k as collateral
if they add more supply like 2k, they will need to add more 2k as collateral?

[toteki]

So, right now if someone has already supplied 1k token and set 1k as collateral if they add more supply like 2k, they will need to add more 2k as collateral?

Yeah, if this merges they'll need to do an additional AddCollateral(2k).
In current main branch, it would be done automatically.

[robert-zaremba]

• Please add more details to the changelog
• overall good work, nice to see general code reduction (diff is negative) 👍

[robert-zaremba]

utACK

1. please add few comments to the proto
2. this PR can't be backported to v2.x - it's breaking