Add Oscillator_SMD_Abracon_ASV_4Pin_7_0x5_1mm 3D package
Created by: HubertD
Drawn in FreeCAD, based on the manufacturer drawing: https://abracon.com/Support/PackageDrawing/Oscillators/ASV.PDF
Took some missing measurements from the manufacturer's 3D step model.
This is my first 3D package contribution, please be patient with a newbie :-)