Add run-rustfix for option_map_or_none lint * Extracts `option_map_or_none` tests into separate file * Adds `// run-rustfix` to `tests/ui/option_map_or_none.rs` cc #3630
Add run-rustfix for option_map_or_none lint * Extracts `option_map_or_none` tests into separate file * Adds `// run-rustfix` to `tests/ui/option_map_or_none.rs` cc #3630