feat: As a user, I want to have an example schema checker module

[Builddddder]

What does this PR do?

Related ticket

Fixes #267

Type of change

• Chore
• Bug fix
• New feature
• Documentation update

Check list

• Unit tests for any smart contract change
• Contracts and functions are documented

[codecov-commenter]

Codecov Report

Merging #317 (0d26591) into dev (10b217f) will increase coverage by 0.11%.
Report is 1 commits behind head on dev.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #317      +/-   ##
==========================================
+ Coverage   91.55%   91.66%   +0.11%     
==========================================
  Files          13       14       +1     
  Lines         225      228       +3     
  Branches       53       54       +1     
==========================================
+ Hits          206      209       +3     
  Misses         10       10              
  Partials        9        9              

Files	Coverage Δ
...racts/src/examples/modules/SchemaCheckerModule.sol	100.00% <100.00%> (ø)

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[orbmis]

Would it be better to have a hardcoded schema id here? This module is really an example to make it clear to other developers how you would check a schema, but maybe this could be clearer. What do you think?

What about this:

function run(
    AttestationPayload memory attestationPayload,
    bytes memory /*validationPayload*/,
    address /*txSender*/,
    uint256 /*value*/
  ) public view override {
    if (keccak256(attestationPayload.schemaId) != keccak256(abi.encode("HARDCODED_SCHEMA_ID"))) {
      revert InvalidSchemaId();
    }

    abi.decode(attestationPayload.attestationData, (address, bytes32, uint64));
  }

If the payload adheres to the Schema, this will pass, if not, it will revert. Does that make sense?

[Builddddder]

I think that's ok for me. New update soon

[Builddddder]

@orbmis Updated code, please review again.