feat: token cache

[robert-zaremba]

Description

closes: #1064

---

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[adamewozniak]

Not super sure we need this imo, would cacheing the leverage token registry reduce load by that much?

[robert-zaremba]

This is used in every tx method

[robert-zaremba]

Also this is a safe cache.

[adamewozniak]

utACK - as long as unit tests pass I'm good

[toteki]

Unit tests right now are getting a lot of this

--- FAIL: TestSimTestSuite (0.04s)
    --- FAIL: TestSimTestSuite/TestSimulateMsgBorrowAsset (0.01s)
        suite.go:77: test panicked: runtime error: invalid memory address or nil pointer dereference
            goroutine 13 [running]:
            runtime/debug.Stack()
            	/opt/hostedtoolcache/go/1.18.3/x64/src/runtime/debug/stack.go:24 +0x65
            github.com/stretchr/testify/suite.failOnPanic(0xc0000c36c0, {0x19b1e20, 0x322f530})
            	/home/runner/go/pkg/mod/github.com/stretchr/testify@v1.7.5/suite/suite.go:77 +0x3b
            github.com/stretchr/testify/suite.Run.func1.1()
            	/home/runner/go/pkg/mod/github.com/stretchr/testify@v1.7.5/suite/suite.go:161 +0x252
            panic({0x19b1e20, 0x322f530})
            	/opt/hostedtoolcache/go/1.18.3/x64/src/runtime/panic.go:838 +0x[207](https://github.com/umee-network/umee/runs/7083806789?check_suite_focus=true#step:6:208)
            github.com/umee-network/umee/v2/x/leverage/keeper.Keeper.SetTokenSettings({{0x24fd788, 0xc0010562b0}, {0x24db420, 0xc00108c6e0}, {{0x24fb230, 0xc0010562b0}, 0xc00011f410, {0x24db420, 0xc00108c650}, {0x24db470, ...}, ...}, ...}, ...)

Is there something in SetTokenSetting that needs to be initialized?

[robert-zaremba]

Probably keeper is not initialized correctly. Checking it.

BTW, TestSimTestSuite/TestSimulateMsgBorrowAsset is not a unit test.

[codecov-commenter]

Codecov Report

Merging #1068 (227a0b3) into main (6c32f68) will increase coverage by 0.02%.
The diff coverage is 89.47%.

@@            Coverage Diff             @@
##             main    #1068      +/-   ##
==========================================
+ Coverage   43.30%   43.32%   +0.02%     
==========================================
  Files          65       65              
  Lines        8371     8383      +12     
==========================================
+ Hits         3625     3632       +7     
- Misses       4498     4502       +4     
- Partials      248      249       +1     

Impacted Files	Coverage Δ
x/leverage/keeper/keeper.go	45.75% <84.61%> (+0.06%)	⬆️
x/leverage/keeper/token.go	70.90% <100.00%> (-0.52%)	⬇️