Add LANCOM 1783VAW over ISDN (#2748)

* Create 1783vaw-isdn.yaml

* Rename 1783vaw-isdn.yaml to 1783VAW-ISDN.yaml

* fix: slug must match model

* fix: file name must match model

* add ProDesk 400 G6 MT

* false branch

---------

Co-authored-by: Harry <Harry@cadby.co.uk>

device-types/LANCOM/1783VAW-over-ISDN.yaml

@@ -0,0 +1,39 @@
+---
+manufacturer: LANCOM
+model: 1783VAW (over ISDN)
+slug: lancom-1783vaw-over-isdn
+part_number: '62055'
+u_height: 0
+is_full_depth: false
+weight: 600
+weight_unit: g
+subdevice_role: child
+comments: '[LANCOM 1783VAW Data sheet](https://www.lancom-systems.de/download/LC-1783VAW/DS_1783VAW_DE.pdf)'
+power-ports:
+  - name: PS1
+    type: dc-terminal
+    maximum_draw: 14
+interfaces:
+  - name: ETH-1
+    type: 1000base-t
+  - name: ETH-2
+    type: 1000base-t
+  - name: ETH-3
+    type: 1000base-t
+  - name: ETH-4
+    type: 1000base-t
+  - name: VDSL/ADSL
+    type: xdsl
+  - name: Analog 2/4
+    type: other
+  - name: Analog 1/3
+    type: other
+  - name: ISDN 1
+    type: 1000base-t
+  - name: ISDN 2
+    type: 1000base-t
+console-ports:
+  - name: USB
+    type: usb-a
+  - name: com
+    type: mini-din-8