feat: Flag lack of inversion in questions

It's very common for non-native English speakers, especially those whose first language is a Slavic language to write things like:

"What we were doing?"

Idiomatic native English changes the word order for questions to "What were we doing"?

Start by locating the grammar rules and tests that handle English questions or word order; the issue does not name specific files or entry points. Review how existing grammar checks identify malformed questions, then add coverage for the stated non-inverted form and its corrected word order. Done means the example is flagged without incorrectly flagging the idiomatic form.

Written by the indexing model from the issue text.