Add way to clean up untagged modelkits/all local modelkits

[bmicklea]

Describe the problem you're trying to solve
Once I have a number of ModelKits in my local repository, it can become annoying to have to clean them out one-by-one.

Describe the solution you'd like
Some kind of CLI command to do bulk removes.

[srikary12]

I'll be happy to work on this.

[amisevsk]

We've currently got two flags for this:

• Remove all untagged modelkits: kit remove -a or kit remove --all
• Remove all locally-stored modelkits: kit remove -a -f or kit remove --all --force

We can potentially add more ways of removing multiple modelkits, but this feels like the low-hanging fruit. Any suggestions?

[srikary12]

I think adding something based on regular expression would help.

[bmicklea]

I actually should have closed this issue when the remove command was expanded. @srikary12 if you think regular expressions would help can you create a new issue and explain the situations where it would be a meaningful improvement?