feat: #348 rename namespace

[ashleymichal]

Closes #348 . Branched off of #392, merge first.

Interacting with this code looks a little something like this:
On successful creation:

$ wrangler kv rename 40de2c538b0a44f89bb8a41d4e1113c1 "renamed namespace"
🌀  Renaming namespace 40de2c538b0a44f89bb8a41d4e1113c1 to have title "renamed namespace"
✨  Success

On API error (in this case kv namespace format incorrect):

$ wrangler kv rename 40de2c538b0a44f89bb8a41d4e1113c "renamed namespace"
🌀  Renaming namespace 40de2c538b0a44f89bb8a41d4e1113c to have title "renamed namespace"
⚠️  Error 10011: could not parse UUID from request's namespace_id: 'uuid: incorrect UUID length: 40de2c538b0a44f89bb8a41d4e1113c'
🕵️‍♂️  Run `wrangler kv list` to see your existing namespaces with IDs

[EverlastingBugstopper]

Any reason for the : () in ✨ Success: ()? Will there ever be any useful data in the parentheses?

[ashleymichal]

Any reason for the : () in ✨ Success: ()? Will there ever be any useful data in the parentheses?

that's a default debug for the output, which is effectively nothing (the endpoint returns a JSON response with result: null and just a success.

I think several of these actions will need to have their outputs "massaged". Will look at customizing outputs today.