Support BLS Key(s) within Veramo Key Manager

[rado0x54]

As a user of Veramo I would like to create and use BLS Keys in order to create and verify Signatures.

Acceptance Criteria

• Support BLS Keys within the Veramo's Key Manager
• Be able to resolve BLS Public Keys within the following did methods:
  -- did:web
  -- did:key
• Also see https://github.com/mattrglobal/bls12381-key-pair

[mirceanis]

perhaps this will be useful: https://github.com/mattrglobal/bls12381-key-pair/blob/5a422cc833bc5f100e5a4ecc8fbf4ea31b8e65a4/src/Bls12381G1KeyPair.ts#L172

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.