Vouching Functionality

[RonTuretzky]

These are the entrypoints
vouch(bytes32 projectApprovalAttestation, bytes32 identityAttestation)
vouch(bytes32 projectApprovalAttestation)

In any given vouch , there are 4 possible scenarios:

• Voucher has already vouched and project has already been vouched by someone else
  • No need to prove the voucher's identity or the project's validity
• Voucher has not already vouched and the project has already been vouched by someone else
  • Need to prove the voucher's identity , don't need to prove project
• Voucher has already vouched and the project has not already been vouched for
  • Need to prove the project's validity
• Voucher has not already vouched and the project has not been vouched for
  • Need to prove the voucher's validity and the project's validity
    The following flowchart explains the process that must be done for each scenario.
    vouch(bytes32 approvedProjectAttestation)

This function should

• Add the project to currentProjects if the project is not already included
• Should utilize `validateProject(bytes32 approvedProjectAttestation) (Dependency on validateProject #3 validateOptimismVoter #4 , please proceed with empty function declarations if blocked)
• should initialize projects expiry
• unit tests

[WillyDallas]

should also

• increment the number of vouches a project has