Challenge: EmpowerChain Claim C1: Self-relaying

[gjermundgaraba]

I added the ability to self-relay using my GoN CLI in two different ways:
1: By transfering directly with the CLI and a --self-relay flag
2: By using a specific command that can relay any transaction if you know source-chain, destination-chain and the original transaction hash.

The self-relaying has proved robust and very useful. It re-uses a solid amount of code from both the GoN CLI itself and the go relayer (https://github.com/cosmos/relayer). It actually requires the go-relayer to be configured first, but the CLI relays the packages itself (it does not start the rly binary or anything). Update: It is now entirely zero-config setup: https://twitter.com/GjermundGaraba/status/1639621796105207810

The documentation for setup can be found here:
https://github.com/gjermundgaraba/gon-tools/blob/main/gon-cli/self-relay.md

The self-relaying code is mainly to be found here: https://github.com/gjermundgaraba/gon-tools/tree/main/gon-cli/gorelayer

An example usage of it can be found here: https://github.com/gjermundgaraba/gon-tools/blob/main/gon-cli/cmd/root_self_relay.go

To show that this really works, I also did the race challenges with a scripted version of this and go through the whole first flow in 25 blocks. And I included some safety sleeps to make sure blocks were settled in between things. This was while most packages were stuck and the channels full of spam. Proof of this can be found in my evidence.xslx

This can easily be extended to work outside of GoN, the code can use for instance Strangelove's Lens to get most of its configuration.

The relayer has been used by a lot of individuals during GoN, and also for helping out others that got their transactions stuck using different tools.

[gjermundgaraba]

Updated with an important update: the CLI is zero-config for self-relaying now!
https://twitter.com/GjermundGaraba/status/1639621796105207810