Add `line:column` information to source code references produced by the parser. This information will be used by GUI2 as part of the solution to #8134.
# Important Notes
- `parse_all_enso_files.sh` has been used to ensure this doesn't affect tree structures.
- `parse_all_enso_files.sh` now checks emitted locations for consistency, and has been used to verify that all line:col references match the values found by an independent scan of the source up to the given UTF8 position.
- Removed `Cursor` and moved all accessors to standalone functions, reducing the generated code size significantly (especially after minification).
- Removed unnecessary `seek`s from everywhere. Now the offseting is part of each `read` implementation.
- Removed unnecessary differences between `read`s on abstract and concrete types. Now abstract types do the pointer access internally in their `read`.
Generate TS bindings and lazy deserialization for the parser types.
# Important Notes
- The new API is imported into `ffi.ts`, but not yet used.
- I have tested the generated code in isolation, but cannot commit tests as we are not currently able to load WASM modules when running in `vitest`.
