Prevent scaffolding of application or module called "ibc"

[aljo242]

This is currently allowed but will lead to a KVStore key collision:

panic: Potential key collision between KVStores:ibc - ibc

[amedumer]

Hey! I want to contribute to the project and I think this can be a great starting point. Can I have this issue?

[0fatih]

It is already there. These reservedNames are not allowed. When I tried to create a module with the name "ibc", I got this error:

✘ Ibc is a reserved name and can't be used as a module name

I think we can close this.

[Pantani]

@0fatih we should also block to create chains called IBC, because the default module will be IBC:
e.g.:
ignite s chain github.com/ignite/ibc