`inspect --all` doesn't list ignite (or non-default) runtime containers

[hellt]

as discovered in #1171

[networkop]

I suppose you need something like clab.WithAllRuntimes() where you build and initialise as many runtimes as you can (assuming some of them will fail the Init() call)

[steiler]

it would not be too bad keeping an index to keep track of which topologies and thereby which containers where deployed also using which runtimes. We could store this in a common folder, like /usr/local/containerlab/<idx_file>. This would also help figuring out relastions from containers that do not have our custom containerlab labels (e.g. kind).

[hellt]

ignite is not in the scope right now, closing until there is more interest