feat: Initial implementation of rebate via priority fee

[zhongeric]

should be gas savings when rebate token is either output token or gas token

[github-actions]

Forge code coverage:

[PASS] test_RelayOrderInfoTypestring_isCorrect() (gas: 18553)
[PASS] test_hash_isDifferentBy_deadline() (gas: 10145)
[PASS] test_hash_isDifferentBy_nonce() (gas: 10124)
[PASS] test_hash_isDifferentBy_reactor() (gas: 4852)
[PASS] test_hash_isDifferentBy_swapper() (gas: 10139)
[PASS] test_hash_isEqual() (gas: 9698)
Suite result: ok. 6 passed; 0 failed; 0 skipped; finished in 4.03ms (3.67ms CPU time)

[FAIL. Reason: log != expected log] testDeploy() (gas: 3051281)
Suite result: FAILED. 0 passed; 1 failed; 0 skipped; finished in 9.94ms (7.36ms CPU time)

[FAIL. Reason: revert: TRANSFER_FAILED] test_excecute_succeeds_universalRouter() (gas: 229198)
[FAIL. Reason: log != expected log] test_execute_NoFeeRecipient() (gas: 265856)
[PASS] test_execute_noInputsOrFee() (gas: 153362)
[PASS] test_execute_reverts_DeadlineBeforeEndTime() (gas: 66637)
[PASS] test_execute_reverts_EndTimeBeforeStartTime() (gas: 83653)
[FAIL. Reason: log != expected log] test_execute_reverts_InvalidNonce() (gas: 265928)
[PASS] test_execute_reverts_InvalidReactor() (gas: 65675)
[PASS] test_execute_reverts_NoInputsSignatureExpired() (gas: 106225)
[PASS] test_execute_reverts_SignatureExpired() (gas: 106105)
[PASS] test_execute_reverts_universalRouter() (gas: 221434)
[FAIL. Reason: log != expected log] test_execute_withDecay() (gas: 266433)
[FAIL. Reason: revert: TRANSFER_FAILED] test_multicall_execute_noDecay() (gas: 294060)
[FAIL. Reason: revert: TRANSFER_FAILED] test_multicall_execute_noDecay_multipleFeeRecipients() (gas: 293967)
[FAIL. Reason: revert: TRANSFER_FAILED] test_multicall_execute_noDecay_specifiedInputRecipients() (gas: 269695)
[FAIL. Reason: revert: TRANSFER_FAILED] test_multicall_permitAndExecute_succeeds() (gas: 1582965)
[PASS] test_multicall_reverts_universalRouter() (gas: 249066)
[PASS] test_permit2_address_correctness() (gas: 6105)
[PASS] test_permit_succeeds() (gas: 1398341)
Suite result: FAILED. 10 passed; 8 failed; 0 skipped; finished in 92.64ms (86.61ms CPU time)

[PASS] test_InputTypeString_isCorrect() (gas: 13022)
[PASS] test_hash_isDifferentBy_amount() (gas: 9095)
[PASS] test_hash_isDifferentBy_recipient() (gas: 9129)
[PASS] test_hash_isDifferentBy_token() (gas: 3863)
[PASS] test_hash_isEqual() (gas: 8705)
Suite result: ok. 5 passed; 0 failed; 0 skipped; finished in 2.66ms (2.49ms CPU time)

[PASS] testRelayFeeEscalation() (gas: 6818)
[PASS] testRelayFeeEscalationBounded(uint256,uint256,uint256,uint256) (runs: 256, μ: 4848, ~: 4847)
[PASS] testRelayFeeEscalationEqualAmounts(uint256,uint256,uint256) (runs: 256, μ: 9005, ~: 9006)
[PASS] testRelayFeeEscalationFullyEscalated() (gas: 4404)
[PASS] testRelayFeeEscalationInvalidAmounts() (gas: 3309)
[PASS] testRelayFeeEscalationNoEscalation(uint256,uint256,uint256) (runs: 256, μ: 4077, ~: 4075)
[PASS] testRelayFeeEscalationNoEscalationYet() (gas: 4383)
[PASS] testRelayFeeEscalationRevertsWithWrongEndStartTimes() (gas: 3334)
[PASS] testToTokenPermissions() (gas: 5572)
[PASS] testToTransferDetails() (gas: 5721)
[PASS] test_FeeEscalatorTypestring_isCorrect() (gas: 23172)
[PASS] test_fuzz_resolve_startTimeEqualsEndTime(uint256,uint256) (runs: 256, μ: 2382, ~: 3745)
[PASS] test_hash_isDifferentBy_endAmount() (gas: 5470)
[PASS] test_hash_isDifferentBy_endTime() (gas: 5468)
[PASS] test_hash_isDifferentBy_startAmount() (gas: 5491)
[PASS] test_hash_isDifferentBy_startTime() (gas: 5469)
[PASS] test_hash_isDifferentBy_token() (gas: 4987)
[PASS] test_hash_isEqual() (gas: 4998)
Suite result: ok. 18 passed; 0 failed; 0 skipped; finished in 248.33ms (370.03ms CPU time)

[FAIL. Reason: assertion failed] test_Permit2WitnessStubTypestring_isCorrect() (gas: 38311)
[FAIL. Reason: assertion failed] test_RelayOrderTypestring_isCorrect() (gas: 49788)
[PASS] test_fuzz_toTokenPermissions(uint256,uint256,uint256) (runs: 256, μ: 12031, ~: 12031)
[PASS] test_fuzz_toTransferDetails_noEscalation_afterBlockTimestamp(uint256,uint256) (runs: 256, μ: 15383, ~: 15230)
[PASS] test_fuzz_toTransferDetails_noEscalation_atBlockTimestamp(uint256,uint256) (runs: 256, μ: 12738, ~: 13786)
[PASS] test_fuzz_toTransferDetails_noEscalation_beforeBlockTimestamp(uint256,uint256) (runs: 256, μ: 13581, ~: 14618)
[PASS] test_hash_isDifferentByCalldata() (gas: 41982)
[PASS] test_hash_isDifferentByFeeEscalator() (gas: 45114)
[PASS] test_hash_isDifferentByInput() (gas: 42294)
[PASS] test_hash_isDifferentByOrderInfo() (gas: 42399)
[PASS] test_hash_isEqual() (gas: 41794)
[PASS] test_toTokenPermissions_default() (gas: 10681)
[PASS] test_toTransferDetails_midPointEscalation() (gas: 14909)
[PASS] test_toTransferDetails_noEscalation() (gas: 10651)
[PASS] test_transferInputTokens_noEscalation_toAddressThis() (gas: 172406)
[PASS] test_validate_reverts_DeadlineBeforeEndTime() (gas: 12930)
[PASS] test_validate_reverts_InvalidReactor() (gas: 23472)
[PASS] test_validate_succeeds() (gas: 20423)
Suite result: FAILED. 16 passed; 2 failed; 0 skipped; finished in 272.75ms (537.90ms CPU time)

Ran 6 test suites in 287.28ms (630.36ms CPU time): 55 tests passed, 11 failed, 0 skipped (66 total tests)

File	% Lines	% Statements	% Branches	% Funcs
script/DeployRelayOrderReactor.s.sol	100.00% (4/4)	100.00% (4/4)	100.00% (0/0)	50.00% (1/2)
script/RelayOrderReactorInitBytecode.s.sol	0.00% (0/6)	0.00% (0/9)	100.00% (0/0)	0.00% (0/2)
src/base/Multicall.sol	100.00% (6/6)	100.00% (8/8)	100.00% (2/2)	100.00% (1/1)
src/lib/FeeEscalatorLib.sol	100.00% (15/15)	100.00% (19/19)	100.00% (8/8)	100.00% (4/4)
src/lib/InputLib.sol	100.00% (1/1)	100.00% (2/2)	100.00% (0/0)	100.00% (1/1)
src/lib/RebateLib.sol	100.00% (5/5)	100.00% (8/8)	100.00% (2/2)	100.00% (2/2)
src/lib/RelayOrderInfoLib.sol	100.00% (1/1)	100.00% (2/2)	100.00% (0/0)	100.00% (1/1)
src/lib/RelayOrderLib.sol	100.00% (17/17)	100.00% (23/23)	100.00% (6/6)	100.00% (6/6)
src/reactors/RelayOrderReactor.sol	100.00% (12/12)	100.00% (15/15)	100.00% (4/4)	100.00% (4/4)
Total	88.55% (116/131)	89.08% (155/174)	100.00% (22/22)	86.21% (50/58)