[Dragon 1] features

[rg911]

• Generate API and DTO codes using swagger doc from Nem2-doc with latest bugs fix and Dragon features.

• Apply to Nem2-lib and test on SDK

  1. Generate latest API client / server codes - Lib
  2. Generate latest api models codes - Lib
  3. Add recipient to secretProofTransaction (schema, buffer, transaction) - Lib
  4. Add new http clients (blockHttp, chainHttp, diagnosticHttp) - SDK
  5. Add new models (Server, MerkelPath) - SDK
  6. Add / Migrate previous Receipts (Dragon) changes. PR

• Apply Dragon changes

  1. Add recipient to secretProofTransaction - SDK
  2. Fix e2e tests (Multisig - need aggregated, SecretProof - new recipient field)
  3. Add e2e tests for new routes (Block, Chain, Diagnostic)
  4. Add / Migrate previous Receipts (Dragon) changes. PR

• Resolve breaking issues.

• Prepend GenerationHash to transaction payload before signing