feat: sdk7 eth provider

[lorux0]

Adds the possibility for scenes from the sdk to request ethereum transactions following EthereumController.sendAsync specification, which will result in a schema equivalent to:

{
    "id": number,
    "jsonrpc": "2.0",
    "result": the raw data from https://docs.metamask.io/wallet/reference/json-rpc-api/
}

[github-actions]

Windows build successfull! You can find a link to the downloadable artifact below.

Name	Link
Commit	974016f
Logs	https://github.com/decentraland/unity-explorer/actions/runs/7479521738
Download	https://github.com/decentraland/unity-explorer/suites/19679386023/artifacts/1160470713

[mikhail-dcl]

All my concerns were addressed. 💪 Thank you