feat(registration): Add Chain registrar contract

[Deniallugo]

What ❔

Add Chain registrar contracts, that allow partners to register their chains and then configure their chain from L1

Why ❔

For making our registration process a bit more transparent and later on make it even easier

Checklist

• PR title corresponds to the body of PR (we generate changelog entries from PRs).
• Tests for the changes have been added / updated.
• Documentation comments have been added / updated.

[vladbochok]

Please update comments to follow napspec specificaion. Comment all function parameters by /// @param.

[vladbochok]

Do you think it makes sense to allow user to re-propose config? I would rather restrict it to make avoid any confusion on the final config (as soon as config is onchain it immutable).

[Deniallugo]

yeah, let's restrict it, i initially thought about it, as a way to give an ability to change it and then make a deployment period when they can't change it. but probably it'd be easier to simply restring it

[vladbochok]

@Deniallugo this should be fixed too

[Deniallugo]

It's done 3 lines before

[vladbochok]

One more nit: please use external modifier when possible. This is general recomendation for all Solidity code, since external can be called inside the code only as child call while public allows the same call as internal

[github-actions]

Coverage after merging deniallugo-chain-registrator into dev will be

86.61%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
contracts/bridge
L1ERC20Bridge.sol	81.82%	80%	75%	83.87%	62, 70, 70–71, 73–74
L1SharedBridge.sol	78.11%	63.89%	84.21%	81.58%	101–102, 109–110, 117–118, 125, 125–126, 133–134, 179–180, 194–195, 203–204, 216–217, 219–220, 231, 231, 231–235, 235–236, 238, 243–245, 245–246, 248–250, 250–251, 253, 265, 274, 274–275, 283–284, 286–287, 298–299, 454–455, 457–458, 589–590, 606–607, 617–618, 633–634, 730–731, 972, 977
contracts/bridgehub
Bridgehub.sol	89.29%	74.07%	100%	91.49%	100–101, 112–113, 132–133, 155–156, 158–159, 332–333, 49, 63–64
contracts/chain-registrar
ChainRegistrar.sol	62.50%	50%	40%	68.97%	103, 112–114, 154–155, 182–183, 191–192, 199–200
contracts/common
ReentrancyGuard.sol	90%	66.67%	100%	92.86%	78–79
contracts/common/libraries
L2ContractHelper.sol	42.86%	0%	50%	52.63%	25–26, 31–32, 35–36, 50, 52, 52–53, 57, 57–58, 66
SemVer.sol	100%	100%	100%	100%
UncheckedMath.sol	100%	100%	100%	100%
UnsafeBytes.sol	100%	100%	100%	100%
contracts/governance
ChainAdmin.sol	64.29%	50%	60%	68.42%	27–28, 39–40, 78, 78–79, 81
Governance.sol	91.67%	94.74%	95%	89.86%	45, 45–46, 49, 51–52, 54–55
contracts/state-transition
StateTransitionManager.sol	59.48%	35.71%	50%	65.42%	101, 106–110, 116, 149–150, 152–153, 155–156, 158–159, 201, 203–204, 209, 211, 211–212, 215–217, 219–220, 255, 275, 289, 294, 299, 304, 309, 314, 319, 386, 386–387, 390, 455–456, 79, 92, 92–93
TestnetVerifier.sol	44.44%	33.33%	50%	50%	16, 16, 16, 32
ValidatorTimelock.sol	95.89%	83.33%	100%	95.83%	241, 82–83
Verifier.sol	89.88%	35.71%	96.30%	90.93%	1673–1674, 287–302, 305–308, 311–318, 321–328, 331–332, 335–336, 339, 384–385, 395–396, 406–407, 417–418, 428–429, 444–445, 454, 454–455, 904–905
contracts/state-transition/chain-deps
DiamondInit.sol	77.55%	45.45%	100%	86.11%	34–35, 37–38, 40–41, 43–44, 46–47, 71
DiamondProxy.sol	92.31%	75%	100%	100%	16, 27
contracts/state-transition/chain-deps/facets
Admin.sol	86.21%	72.73%	92.31%	87.30%	109, 109–110, 112–113, 178, 180, 83–84, 94–95
Executor.sol	82.04%	63.41%	84.38%	87.90%	137–138, 192, 197, 202, 207, 212, 217, 222, 227, 230–231, 235–236, 240–242, 244–245, 260–261, 280, 294–295, 361–362, 425, 447–449, 469, 48, 48–49, 519–520, 528–529, 549, 556–557, 57, 59, 59–60, 619, 62, 620, 63, 646–647, 696–697, 70, 700–701, 71, 74–75, 775
Getters.sol	92.23%	100%	90.48%	93.22%	211, 57, 77, 82
Mailbox.sol	100%	100%	100%	100%
ZkSyncHyperchainBase.sol	92.86%	85.71%	100%	92.86%	55–56
contracts/state-transition/libraries
Diamond.sol	93.33%	80.77%	100%	95.96%	109–110, 113, 115, 117, 120, 198–199, 316
LibMap.sol	100%	100%	100%	100%
Merkle.sol	100%	100%	100%	100%
PriorityQueue.sol	100%	100%	100%	100%
TransactionValidator.sol	94.44%	88.24%	100%	96%	66–67, 69–70
contracts/upgrades
BaseZkSyncUpgrade.sol	58.20%	27.27%	100%	60.23%	104, 104–105, 108, 111, 114–115, 126, 126–127, 130, 133, 136–137, 151–153, 171–173, 212–213, 215, 215–216, 232–233, 249–250, 252–253, 258–259, 259–260, 271–272, 278–279, 285–286, 293–294, 298–299, 308–309, 311–312, 75–76
BaseZkSyncUpgradeGenesis.sol	56.67%	14.29%	100%	68.18%	25, 25–26, 33–34, 40–41, 52–53, 62–63, 65–66
DefaultUpgrade.sol	100%	100%	100%	100%
GenesisUpgrade.sol	100%	100%	100%	100%
contracts/vendor
AddressAliasHelper.sol	85.71%	75%	100%	85.71%	60, 62