feat(ci): Do sub-validation of projects in bulk runs, UX fixes (#42)
* feat(ci): Do sub-validation of projects in bulk runs, UX fixes
- Improve validator to run subsidiary tests if content is "addon targeted'
- Update to 1.21.30 sample files
- Adjust home UX to make "open from file"/"backup" more clear
- Refactor how folder delimiters work across IStorage
- Fix issue with parsing of JSON with comments
- nineslice files
- Fix dependency fix up in new project generation
- Model geometries can have multiple models; accommodate
- Basic blockbench model export
* fix(samples): Small fixes in samples and sample loading
