FortiGate 50G (#3740)

* Add files via upload

FortiGate 50G/51G

* Add files via upload

FortiGate 50G/51G images

* Add files via upload

* Add files via upload

* Add files via upload

* Delete FG-50G.yaml

* Add weight and airflow attributes to FG-50G.yaml

* Update FG-50G.yaml

---------

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

device-types/Fortinet/FG-50G.yaml

@@ -0,0 +1,32 @@
+---
+manufacturer: Fortinet
+model: FortiGate 50G
+slug: fortinet-fg-50g
+part_number: FG-50G
+u_height: 1
+weight: 1.0
+weight_unit: kg
+airflow: passive
+is_full_depth: false
+front_image: true
+rear_image: true
+comments: '[FortiGate 50G Series Datasheet](https://www.fortinet.com/content/dam/fortinet/assets/data-sheets/pdf/fortigate-fortiwifi-50g-series.pdf)'
+console-ports:
+  - name: Console
+    type: rj-45
+power-ports:
+  - name: PS1
+    type: dc-terminal
+    maximum_draw: 9
+    allocated_draw: 8
+interfaces:
+  - name: lan1
+    type: 1000base-t
+  - name: lan2
+    type: 1000base-t
+  - name: lan3
+    type: 1000base-t
+  - name: A
+    type: 1000base-t
+  - name: wan
+    type: 1000base-t