Modification of `omnisharp.json` can lead to errors

As discussed on slack:

> ... Problem is with case-sensitivity. As I've added manually, I used `BakeryPath`. Cake extension wants `bakeryPath`.
> ... Also, the current logic seems to fail if cake section is missing.

Start by locating the extension's handling of omnisharp.json and inspect how the cake section and its properties are read. Reproduce the two reported cases: an omitted cake section and the differently cased BakeryPath property. Done means both configurations are handled without errors and the expected bakery path is recognized.

Written by the indexing model from the issue text.