Frads

- fix bugs in workflowconfig
- add_lighting now needs a lighting level(watts)
- update how-to guides

fix(methods.py): flip interior surface normal for surface_window_matrices, assuming surface facing interior.

Update dependency version: Scipy

fix(matrix): view factor calculation

**Full Changelog**: https://github.com/LBNL-ETA/frads/compare/v1.2.0...v1.2.1

What's Changed
* Surface view by taoning in https://github.com/LBNL-ETA/frads/pull/48


**Full Changelog**: https://github.com/LBNL-ETA/frads/compare/v1.1.3...v1.2.0

What's Changed
* fix(window): layer thickness in mm by TammieYu in https://github.com/LBNL-ETA/frads/pull/49


**Full Changelog**: https://github.com/LBNL-ETA/frads/compare/v1.1.2...v1.1.3