Collapse case block to header match

https://github.com/ijunaid8989/extractor/blob/d4318c65d2fbd734db3ad234a8c6cc7b45c49f14/lib/snapshot/snap_extractor.ex#L104

Can be rewritten into:
```
def handle({:ok, something})
```

Same for this:
https://github.com/ijunaid8989/extractor/blob/d4318c65d2fbd734db3ad234a8c6cc7b45c49f14/lib/snapshot/snap_extractor.ex#L191