[feature-request]: New gRPC methods

[niteshbalusu11]

Issue and Steps to Reproduce

@cdecker sorry for the long list, the following methods could really help me out.

Please add/build out new gRPC methods:

• ListClosedChannels
• openChannelAbort
• fundChannelCancel
• multiFundChannel
• broadcastChainTransaction

Subscriptions:

• staticBackups
• forwards
• channel events (opens/closes)
• payments (send/receive)
• chain transactions
• Subscribe to probes

[theborakompanioni]

* ListClosedChannels

This is already included with bff3b1c 💪

* broadcastChainTransaction

This might have happened in 04e7e28 🚀, depending on if this is what you meant..

I am going to take a leap and add two additional methods to the list..

• listConfigs
• paystatus

Should I open separate issues?

[cdecker]

I made the RPC methods into a check-list, and checked the ones that are already present. Some of the methods you list need disambiguation, as there is no method broadcastChainTransaction and ProbeNode. Did you copy those from another implementation, it isn't quite clear which method you need.

[niteshbalusu11]

I made the RPC methods into a check-list, and checked the ones that are already present. Some of the methods you list need disambiguation, as there is no method broadcastChainTransaction and ProbeNode. Did you copy those from another implementation, it isn't quite clear which method you need.

I removed probe (doesn't make sense to have that).
broadcastChainTransaction just wanted to an RPC method that can take a raw tx and broadcast it.