Basic client for Arbchain

Very first internal release of Arbchain client and contract integration

Features

• Client integrations to perform:
  • Signup and login flow for different actors
  • Arbitration request creation and fetching details
  • Agreement creation and fetching details
  • Basic arbitration actions such as arbitrator nomination, appointment, and statement uploads
  • ThreadDB integration to store user details and caching the arbitration and agreement metadata
  • End to end encryption for all the documents uploaded to the platform
• GitHub workflow for production deployment