Added RuggedCOM RS900 (#3529)

* Added Base RuggedCOM RS900

* Added missing ports

* Update RS900.yaml

* Update RS900.yaml

* Update RS900.yaml

---------

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

device-types/RuggedCOM/RS900.yaml

@@ -0,0 +1,38 @@
+---
+manufacturer: RuggedCOM
+model: Rugged Switch RS900
+slug: ruggedcom-rugged-switch-rs900
+part_number: RS900
+u_height: 0
+is_full_depth: false
+airflow: passive
+weight: 1.23
+weight_unit: kg
+comments: '[RS900 Datasheet](http://www.signalcontrol.com/products/ruggedcom/RuggedCom_RS900_Ethernet_Switch.pdf)'
+power-ports:
+  - name: DC Input
+    type: dc-terminal
+    maximum_draw: 10
+console-ports:
+  - name: Serial
+    type: de-9
+    label: RS232
+interfaces:
+  - name: '1'
+    type: 100base-tx
+  - name: '2'
+    type: 100base-tx
+  - name: '3'
+    type: 100base-tx
+  - name: '4'
+    type: 100base-tx
+  - name: '5'
+    type: 100base-tx
+  - name: '6'
+    type: 100base-tx
+  - name: '7'
+    type: 100base-tx
+  - name: '8'
+    type: 100base-tx
+  - name: '9'
+    type: 100base-fx