Tikray

- Chore: Remove silly log statement
- Update documentation
- Adjust wording. Improve tests. Add API example.
- Rename: `TransformationProject` -> `ProjectTransformation`

- Core: Added streaming support for JSONL / NDJSON files

- CLI: Added CLI interface, per `tikray` program
- Core: Started using `orjson` and `orjsonl` packages, for performance
reasons and JSONL / NDJSON support
- Core: Optionally invoke single resource on project file

- Renamed package to `loko`, then `tikray`

- Zyp/Moksha: Improve error reporting when rule evaluation fails

- Zyp/Moksha/jq: `to_object` function now respects a `zap` option, that
removes the element altogether if it's empty
- Zyp/Moksha/jq: Improve error reporting at `MokshaTransformation.apply`