Hide the scaffold band command and remove info about Bandchain from the docs

[fadeev]

It's not maintained and we need to move this functionality into a plugin: #3928

We don't have to delete the code, just hide temporarily until we're ready to move it to a plugin and make an arrangement with Band for them to maintain it.

[tbruyelle]

It's a good first real usage of the plugins! Should we create a new ignite repo for the plugins ?

[aljo242]

It's a good first real usage of the plugins! Should we create a new ignite repo for the plugins ?

I think this is a great idea. @ilgooz wdyt?

[aljo242]

This could be the first plugin we include in an ignite/plugins repo

[fadeev]

I think one of the advantages of the plugin system is that other entities would be maintaining some of them. I think with Band that should be the case. It's a chain-specific functionality and if they want it in the CLI, they should assign a dev to maintain it.

Having plugins in a single repo I think is perfectly fine. Codeowners file can be used to specify who is responsible for which plugin.