helpful message on 404 with deployment by name

[zzstoatzz]

closes #15571

uses difflib to get fuzzy string matching

ObjectNotFound: Deployment 'hello/hello-moo-deng' not found; did you mean 'hello/hello'?

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this might be over-wraught, but I do think it will be helpful. very open to suggestions

[codspeed-hq]

CodSpeed Performance Report

Merging #15578 will not alter performance

_{Comparing fuzzy-match (29ded30) with main (f524dc8)}

Summary

✅ 3 untouched benchmarks

[desertaxle]

I dig it!