Add LED_RGB_3528.
This request adds a generic 3528 RGB LED. This is similar to the existing LED_RGB_5050-6
footprint.
The reference used has a different numbering but there are other products with the same package which follow the standard (which is what this footprint uses).
URL to the reference datasheet: https://www.we-online.com/katalog/datasheet/150141M173100.pdf
Edited by Daniel Khodabakhsh