feat(protocol): improve precision for slot-availability multipliers

[dantaik]

Assuming the first slot's baseFee is bMin, the last slot's baseFee is bMax, the ration of bMin/bMax is the slot availability multiplier. Usually we want to set this multiplier to a certain value, for example, 20, then we calculate the internal parameter slotSmoothingFactor reversely to ensure bMin/bMax == 20.

Before this PR, the actual bMin/bMax value is way off 20 because the number of slots are not a large value. We need to make sure slotSmoothingFactor has higher precision, that's why we multiply 1000 in the calculate of fees so we can give slotSmoothingFactor a bigger value -- if it's supposed to have a value of 12.1234, now it will have a value of 12123 instead of 12.

[codecov]

Codecov Report

Merging #13108 (4717917) into main (543f242) will not change coverage.
The diff coverage is 25.00%.

@@           Coverage Diff           @@
##             main   #13108   +/-   ##
=======================================
  Coverage   62.77%   62.77%           
=======================================
  Files         113      113           
  Lines        3213     3213           
  Branches      437      437           
=======================================
  Hits         2017     2017           
  Misses       1120     1120           
  Partials       76       76           

Flag	Coverage Δ		*Carryforward flag
bridge-ui	92.61% <ø> (ø)		Carriedforward from 543f242
protocol	53.22% <25.00%> (ø)
relayer	69.15% <ø> (ø)		Carriedforward from 543f242
ui	100.00% <ø> (ø)		Carriedforward from 543f242

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
packages/protocol/contracts/L1/libs/LibUtils.sol	31.57% <0.00%> (ø)
...ckages/protocol/contracts/libs/LibSharedConfig.sol	0.00% <ø> (ø)
.../contracts/test/L1/TestTaikoL1EnableTokenomics.sol	0.00% <0.00%> (ø)
...ackages/protocol/contracts/test/L1/TestTaikoL2.sol	0.00% <0.00%> (ø)
...ackages/protocol/contracts/test/L1/TestTaikoL1.sol	87.87% <100.00%> (ø)
...cts/test/L1/TestTaikoL2EnablePublicInputsCheck.sol	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[davidtaikocha]

All calculation changes LGTM.