lang: work on various things

- work on new world
  - add file db
  - source_file parsing
  - locs
- fix some test stuff

crates/lang/src/lst_parser/grammar.rs

@@ -33,6 +33,6 @@ fn check_parser(input: &str, parser_fn: fn(&mut Parser), output: &str) {
     let p_out = dbg!(parser.finish());
     let o = Output::from_parser_output(toks, p_out);
 
-    let s = format!("{o:?}");
+    let s = strip_ansi_escapes::strip_str(format!("{o:?}"));
     assert_eq!(&s, output);
 }