feat: add network plugin

[Pantani]

move the network app to the apps mono repo

We should add this to the commit before squash:

This commit migrates the [cli-plugin-network repo](https://github.com/ignite/cli-plugin-network) module to this ignite apps repository.

Co-authored-by: @tbruyelle <Thomas Bruyelle>
Co-authored-by: @Pantani <Danilo Pantani>
Co-authored-by: @jeronimoalbi <Jerónimo Albi>
Co-authored-by: @aljo242 <Alex>
Co-authored-by: @lumtis <Lucas Bertrand>
Co-authored-by: @fadeev <Denis Fadeev>
Co-authored-by: @julienrbrt <Julien Robert>

[ilgooz]

Thanks for pushing this!

Meanwhile, we should make it clear that this code originates from another repo and should give attributions to the other authors.

We should try finding the best way of giving attributions; at very least we can include them as co-authors by pushing an empty commit. And in the description of the commit we could add more information as/if needed.

Please see the format: