Update to workspace, include example adapter and package

[adairrr]

• setup workspace
• rename app directory to app
• add comment about example binaries
• Update workspace with a package and adapter example

[Buckram123]

Nice, we now have setup for everything now and latest version of abstract!
Closes ABS-408

[CyberHoward]

Thanks for the update!

I don't like having a package for apps/adapters. The way we designed the codebase is really oriented towards having each contract be its own self-contained package/crate. There really shouldn't be a need for packages when building modules unless you have some unified logic that you need access to. All the code that is currently in the my package is msgs, state and errs which should all be in the contract crate itself, together with its implementation IMO.

We do this with all our apps and adapters that we've developed internally and it works wonderfully.

[CyberHoward]

Would like to keep the counter logic in place and move the app/adapter types back into their respective crates. See my previous comment :)