[Preimage] Support for updating token transfer fee on AssetHub

[vgeddes]

The pricing-parameters command now generates a preimage that:

1. Updates pricing parameters on BridgeHub
2. Updates token transfer base fee on AssetHub

Example:

$ target/debug/snowbridge-preimage  pricing-parameters --exchange-rate-numerator 1 --exchange-rate-denominator 375 --fee-per-gas 50 --local-reward 1_000_000_000_00 --remote-reward 1_000_000_000_000
BridgeHub:
  ExchangeRate: 0.0026666666666666666 ETH/ROC
  FeePerGas: 50.000000000 GWEI
  LocalReward: 0.100000000000 ROC [100000000000 PLANCK]
  RemoteReward: 0.000001000000000000 ETH [1000000000000 WEI]
AssetHub:
  BaseFee: 5.878563166665 ROC, [5878563166665 PLANCK]
0x1a0008630003000100d50f030c2f00000602024beb73753c89015302abaa66b751790900000000000000000000e876481700000000000000000000000010a5d4e800000000000000000000000000000000000000000000000000000000743ba40b0000000000000000000000000000000000000000000000000000002000630003000100a10f030c2f000006028aad071b0094000404405fbc5c7ba58845ad1f1a9a7c5bc12fad40c959abb55805000000000000000000002000

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.71%. Comparing base (16229c1) to head (30f9716).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1152      +/-   ##
==========================================
+ Coverage   78.92%   80.71%   +1.78%     
==========================================
  Files          13       12       -1     
  Lines         408      394      -14     
  Branches       74       72       -2     
==========================================
- Hits          322      318       -4     
+ Misses         69       59      -10     
  Partials       17       17              

Flag	Coverage Δ
solidity	80.71% <ø> (+1.78%)	⬆️

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[yrong]

Just curious why remove this check?

[vgeddes]

Oops, that was made in error somehow. I will revert

[vgeddes]

its due to some kind of merge conflict / stale branch issue on Github