feat(gcp): add kms support

[janithashri]

Summary

This pull request introduces a new intel module to ingest foundational data from the Google Cloud Key Management Service (KMS).

• New Nodes:

  • :GCPKeyRing
  • :GCPCryptoKey

• New Relationships:

  • (GCPProject)-[:RESOURCE]->(GCPKeyRing)
  • (GCPKeyRing)-[:CONTAINS]->(GCPCryptoKey)
  • (GCPProject)-[:RESOURCE]->(GCPCryptoKey)

Related issues or links

• Addresses part of #1736

Checklist

• [x] Update/add unit or integration tests.

• [x ] Include a screenshot showing what the graph looked like before and after your changes.

• [ ] Include console log trace showing what happened before and after your changes.

• [x] Update the schema and readme.

• [x] Use the NodeSchema data model.

• [x] Confirm that the linter actually passes.