Creates c887 and c7201 (#1387)

* Creates c887 and c7201

* Updates C7201 and C887VA-K9 as per contribution guidelines

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Co-authored-by: Patrick Holahan <tjunyat@gmail.com>

device-types/Cisco/C7201.yaml

+---
+manufacturer: Cisco
+model: C7201
+part_number: CISCO7201
+slug: cisco-c7201
+comments: '[Cisco 7201 Data Sheet](https://www.cisco.com/c/en/us/products/collateral/routers/7201-router/product_data_sheet0900aecd80630b58.html)'
+u_height: 1
+is_full_depth: false
+weight: 7.48
+weight_unit: kg
+airflow: front-to-rear
+console-ports:
+  - name: con0
+    type: rj-45
+interfaces:
+  - name: FastEthernet0/0
+    type: 100base-tx
+  - name: GigabitEthernet0/0
+    type: 1000base-x-sfp
+  - name: GigabitEthernet0/1
+    type: 1000base-x-sfp
+  - name: GigabitEthernet0/2
+    type: 1000base-x-sfp
+  - name: GigabitEthernet0/3
+    type: 1000base-x-sfp
+module-bays:
+  - name: PSU1
+    position: '1'
+  - name: PSU2
+    position: '2'

device-types/Cisco/C887VA-K9.yaml

+---
+manufacturer: Cisco
+model: C887VA-K9
+part_number: C887VA-K9
+slug: cisco-c887va-k9
+comments: Discontinued and no official datasheet on the Cisco website.
+u_height: 1
+is_full_depth: false
+weight: 2.5
+weight_unit: kg
+console-ports:
+  - name: con0
+    type: rj-45
+    mgmt_only: true
+interfaces:
+  - name: Ethernet0
+    type: 100base-tx
+  - name: FastEthernet0
+    type: 100base-tx
+  - name: FastEthernet1
+    type: 100base-tx
+  - name: FastEthernet2
+    type: 100base-tx
+  - name: FastEthernet3
+    type: 100base-tx
+power-ports:
+  - name: PSU0
+    type: iec-60320-c6
+    maximum_draw: 80