Add Relay Omron G5NB

Related to:

• Footprint: kicad-footprints!3407 (merged)
• 3D package: kicad-packages3D!944 (merged)

Datasheet: https://omronfs.omron.com/en_US/ecb/products/pdf/en-g5nb_el.pdf

Omron G5NB PCB Power Relay with a Single Pole Single Throw Normally Open (SPST-NO) pin names based on the EN 50005 rules:

1. A1 (or 1): Coil Positive
2. A2 (or 2): Coil Negative
3. 11 (or 3): Common (C)
4. 21 (or 4): Normally Open (NO)