Add SignedZone

[ryanio]

Adds SignedZone, compliant with with SIP-7

[codecov-commenter]

Codecov Report

Base: 64.82% // Head: 99.05% // Increases project coverage by +34.22% 🎉

Coverage data is based on head (8d2df5f) compared to base (976956d).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff             @@
##              1.2     #895       +/-   ##
===========================================
+ Coverage   64.82%   99.05%   +34.22%     
===========================================
  Files         107       47       -60     
  Lines        4421     2642     -1779     
  Branches      559      391      -168     
===========================================
- Hits         2866     2617      -249     
+ Misses       1532       25     -1507     
+ Partials       23        0       -23     

Flag	Coverage Δ
foundry	74.26% <ø> (+26.61%)	⬆️
production	100.00% <ø> (ø)
reference	100.00% <ø> (+0.56%)	⬆️

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Impacted Files	Coverage Δ
contracts/test/TestERC1155Revert.sol
contracts/test/InvalidERC721Recipient.sol
test/foundry/utils/ArithmeticUtil.sol
test/foundry/utils/BaseConsiderationTest.sol
test/foundry/utils/ERC1155Recipient.sol
contracts/test/ConduitMock.sol
contracts/test/ConduitMockRevertBytes.sol
contracts/test/TestERC20.sol
contracts/test/TestContractOffererNativeToken.sol
contracts/test/TestInvalidContractOfferer.sol
... and 54 more

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