Added ISR 1121X-8P [✅ passed] (#2931)

* Added ISR 1121X-8P

* More corrections

* Corrected power-port type and tweaked some details

---------

Co-authored-by: Florian Knorn <fknorn@cisco.com>
Co-authored-by: Harry <Harry@cadby.co.uk>

device-types/Cisco/ISR-1121-8P.yaml

@@ -5,6 +5,9 @@ part_number: C1121-8P
 slug: cisco-isr-1121-8p
 u_height: 1
 is_full_depth: false
+weight: 1.58
+weight_unit: kg
+comments: 'Data sheet: [Cisco 1000 Series Integrated Services Routers](https://www.cisco.com/c/en/us/products/collateral/routers/1000-series-integrated-services-routers-isr/datasheet-c78-739512.html#Cisco112xISRsBringingmodularityforcellulartechnology)'
 interfaces:
   - name: GigabitEthernet0/0/0
     type: 1000base-x-sfp
@@ -27,11 +30,11 @@ interfaces:
   - name: GigabitEthernet0/1/7
     type: 1000base-t
 console-ports:
-  - name: con 0
+  - name: con0
     type: rj-45
   - name: usb
     type: usb-micro-b
 power-ports:
   - name: PSU0
-    type: iec-60320-c14
-    maximum_draw: 150
+    type: dc-terminal
+    maximum_draw: 20

device-types/Cisco/ISR-1121X-8P.yaml

@@ -0,0 +1,43 @@
+---
+manufacturer: Cisco
+model: ISR 1121X-8P
+part_number: C1121X-8P
+slug: cisco-isr-1121x-8p
+u_height: 1
+is_full_depth: false
+front_image: true
+rear_image: true
+weight: 1.58
+weight_unit: kg
+comments: "- Data sheet: [Cisco 1000 Series Integrated Services Routers](https://www.cisco.com/c/en/us/products/collateral/routers/1000-series-integrated-services-routers-isr/datasheet-c78-739512.html#Cisco112xISRsBringingmodularityforcellulartechnology)'\r\
+  \n- \"X\" signifies 8-GB DRAM memory for app hosting"
+interfaces:
+  - name: GigabitEthernet0/0/0
+    type: 1000base-x-sfp
+  - name: GigabitEthernet0/0/1
+    type: 1000base-t
+  - name: GigabitEthernet0/1/0
+    type: 1000base-t
+  - name: GigabitEthernet0/1/1
+    type: 1000base-t
+  - name: GigabitEthernet0/1/2
+    type: 1000base-t
+  - name: GigabitEthernet0/1/3
+    type: 1000base-t
+  - name: GigabitEthernet0/1/4
+    type: 1000base-t
+  - name: GigabitEthernet0/1/5
+    type: 1000base-t
+  - name: GigabitEthernet0/1/6
+    type: 1000base-t
+  - name: GigabitEthernet0/1/7
+    type: 1000base-t
+console-ports:
+  - name: con0
+    type: rj-45
+  - name: usb
+    type: usb-micro-b
+power-ports:
+  - name: PSU0
+    type: dc-terminal
+    maximum_draw: 20