feat: mainnet support for the js-sdk

[thephez]

Expected Behavior

The mainnet network type would be supported.

Current Behavior

Currently, the JS SDK can only use mainnet if the dapiAddresses client option is used.

Possible Solution

Update to work more like testnet where simply setting the network type is all that's required. Or provide a mainnet seed that could be used instead of hard-coding specific evonode addresses.

Alternatives Considered

Additional Context

[shumkov]

JS SDK is updated #2146 and #2161

[shumkov]

The infrastructure team is working on testnet and miannet seed nodes.