Apollo Codegen neither should ignore errors in gql queries nor skip bad queries

This query contains syntax error: there should be `$` before `language`
```
const similarMoviesQuery = gql`
query SimilarMovies($id: Int!, language: Language!) {
...
}`;
```

When to run `apollo codegen`, it skips this file and does not generate TypeScript interfaces for it.
✔ Loading Apollo Project
✔ Generating query files with 'typescript' target - wrote 5 files (**should be 6**)

**No errors and no warnings...** It does not create types for this query.

**Expected** that some error/warning appears in the console if query/mutation contains syntax error etc.

Start with the `apollo codegen` command and trace how the shown invalid GraphQL query is parsed and skipped. Reproduce the example, then add coverage for the invalid query path so codegen reports an error or warning instead of silently omitting generated types.

Written by the indexing model from the issue text.