BaseFee based on GasWanted

[crypto-facs]

Closes: #XXX

Description

This PR aims to fix a design issue on our current BaseFee calculation by the FeeMarket. Our BaseFee is currently reacting to network congestion based on how much gasUsed did the parent block had. We are storing this value in the GenesisState of the FeeMarket module for it to be used on the child block and calculate the new BaseFee based on that (increase or decrease). This does not reflect the network congestion on a Cosmos SDK chain as blocks are actually filled based on gasWanted (aka GasLimit) independently from how much we refund the user after how much gasUsed did the tx required.

Based on this, a solution had been discussed where we base this reaction on a total gasWanted value per block that is tracked on the FeeMarket TransientStore for it to be stored on EndBlock on the GenesisState of the FeeMarket module for the child block to calculate BaseFee on it.

The was no need to changed the GenesisState BlockGas property name, just the way it was calculated.

NOTE: I am missing some tests to make sure the BaseFee is being calculated correctly.

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[alexanderbez]

I can't speak for the changes in app/ante/eth.go, but otherwise this looks like the correct approach 👍

[fedekunze]

Left some comments, there are also some tests failing 👍

Can you update the specification to reflect the new changes?

[codecov]

Codecov Report

Merging #1105 (240ac4c) into main (8155e1f) will increase coverage by 0.42%.
The diff coverage is 97.36%.

@@            Coverage Diff             @@
##             main    #1105      +/-   ##
==========================================
+ Coverage   61.36%   61.78%   +0.42%     
==========================================
  Files          88       88              
  Lines        7213     7257      +44     
==========================================
+ Hits         4426     4484      +58     
+ Misses       2563     2553      -10     
+ Partials      224      220       -4     

Impacted Files	Coverage Δ
x/evm/keeper/migrations.go	100.00% <ø> (+33.33%)	⬆️
app/ante/fee_market.go	86.36% <86.36%> (ø)
app/ante/handler_options.go	80.00% <100.00%> (+0.83%)	⬆️
app/app.go	85.55% <100.00%> (ø)
x/evm/keeper/keeper.go	79.11% <100.00%> (+0.40%)	⬆️
x/evm/keeper/state_transition.go	75.45% <100.00%> (+0.07%)	⬆️
x/evm/keeper/utils.go	67.60% <100.00%> (ø)
x/evm/module.go	53.73% <100.00%> (+0.87%)	⬆️
x/evm/simulation/genesis.go	93.54% <100.00%> (ø)
x/evm/types/params.go	100.00% <100.00%> (+6.52%)	⬆️
... and 7 more