Docs/Examples on building a bridge

[dvcrn]

Hi! I'm interested in building bridges on top of this library, but there's currently little documentation or examples of what needs to be implemented, or what the bridge lifecycle is, which makes getting started a bit hard.

Is there a very basic bridge that implements the bare-minimum that could be used as a base for starting? I'm currently reading through the code of the slack and gmessages bridges

[sumnerevans]

Reading and copying an existing bridge is the documentation.

[dvcrn]

That doesn't mean that this can't be improved to make it easier to get into bridge development, even if it's just a lifecycle / state diagram, explanation in the README, or examples in the godoc. Easier to get started can motivate more people (like myself) to get into bridge development during a bit of free time, and expand the matrix ecosystem

The current bridges can get quite complex, and not all of this is needed to bootstrap a simple relay bridge 😅