Inductor_SMD: Add Chilisin BMRx series 7.3x6.6mm power inductors

Datasheet url: https://www.chilisin.com/upload/media/product/power/file/BMRx_Series.pdf

Link for PR for 3d models: kicad-packages3D!747 (closed)

Used footprint generator, kicad-footprint-generator!681 (closed)

Updated, reworked footprint generator: kicad-footprint-generator!750 (closed)

Screenshot of one footprint

Yes, no WRL model, as step files are provided instead, and match the ones provided.