Adding Digitus DN-19-12-U rack type. (#3665)

Author: John222

rack-types/Digitus/DN-19-12-U.yml

@@ -0,0 +1,18 @@
+---
+manufacturer: Digitus
+model: DN-19 12-U
+slug: digitus-dn-19-12-u
+form_factor: wall-cabinet
+description: 12HE Wall Mounted Cabinet [Datasheet DE](https://www.digitec.ch/Files/8/8/4/6/5/2/starter_basic.pdf)
+width: 19
+u_height: 12
+starting_unit: 1
+outer_width: 600
+outer_height: 643
+outer_depth: 450
+outer_unit: mm
+mounting_depth: 350
+weight: 26
+max_weight: 100
+weight_unit: kg
+desc_units: false