Choose and set up Solna RPC endpoint provider

[peronczyk]

As there is no publicly available free to use RPC endpoint for Solana Mainnet we need to:

1. choose a provider (here's an official list: https://solana.com/rpc - Mainnet Beta). For my own testing purposes I was using this one: https://app.blockdaemon.com/
2. and set up AE company account
3. Configure our Wallet to use the endpoint

@smaroudasunicorn Can you take care of the first 2 points? I left my suggestion there, but maybe you want to choose different one? Also consider if any of these providers also provides an RPC API endpoint for Ethereum. This way we could set up one service for two protocols.