Inflow- Walletless users onboarding: EVM chains configuration #403

EVM chains configurations for the supported blockcahins should be stored in a database for higher flexibility. The following environment variables should be transformed into SQL table and read when needed.

EVM_RPC_ENDPOINT=https://ethereum-rpc.publicnode.com
EVM_USDC_ADDRESS=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
EVM_CCTP_CONTRACT=0xBC8552339dA68EB65C8b88B414B5854E0E366cFc
EVM_OPERATOR_ADDRESS=0xc2a7e8FEe8fF0B35e752345772C46ba1Db36a6eF
EVM_OPERATIONAL_FEE_BPS=50
EVM_MIN_OPERATIONAL_FEE=10
EVM_MIN_DEPOSIT=50000

(Example values are for the Ethereum blockchain)