Create Wallet Manager Package

[wainola]

Transfer widget will require connection logic with the providers that it receives, so then it can be connected to the current wallet to check balances and account data

Implementation details

• Create wallet manager package
• Package should provide means to connect to Evm or Substrate wallets.
• For EVM, connection to Metamask would suffice for the MVP. For Substrate, polkadot.js
• Provide logic to handle connection and get basic information about the connected account: address and balance
• For susbtrate connection, use app-injector to communicate with polkadot.js extension
• For susbtrate, wallet class must be able to accept ApiPromise instance to work

Testing details

• provide unit tests for this package

Acceptance Criteria

• create unit test for the package. Add those to the pipeline
• pipeline for building and linting should also pass

[MakMuftic]

Hey team! Please add your planning poker estimate with Zenhub @wainola @FSM1