Add 2 QNAP devices & SG350XG-24T (#285)

* Create QNAP ts-431xeu
* Create QNAP  ts-459pro+
* Create Cisco SX350X-24-K9

device-types/QNAP/ts-431xeu.yml

@@ -0,0 +1,18 @@
+manufacturer: QNAP
+model: TS-431XeU
+slug: ts-431xeu
+part_number: TS-431XeU
+u_height: 1
+is_full_depth: false
+comments: '[TS-431XeU Series Datasheet](https://www.qnap.com/en/product/ts-431xeu/specs/hardware)'
+power-ports:
+  - name: PSU 1
+    type: iec-60320-c14
+    maximum_draw: 40
+interfaces:
+  - name: Adapter 1
+    type: 1000base-t
+  - name: Adapter 2
+    type: 1000base-t
+  - name: Adapter 3
+    type: 10gbase-x-sfpp

device-types/QNAP/ts-459pro+.yml

@@ -0,0 +1,19 @@
+manufacturer: QNAP
+model: TS-459pro+
+slug: ts-459proplus
+part_number: TS-459pro+
+u_height: 0
+is_full_depth: false
+comments: '[TS-459pro+ Series Datasheet](https://www.qnap.com/en/product/ts-459%20pro+/specs/hardware)'
+power-ports:
+  - name: PSU 1
+    type: iec-60320-c14
+    maximum_draw: 35
+interfaces:
+  - name: Ethernet 1
+    type: 1000base-t
+  - name: Ethernet 2
+    type: 1000base-t
+console-ports:
+  - name: VGA
+    type: other

device-types/SX350X-24-K9.yml

@@ -0,0 +1,71 @@
+manufacturer: Cisco
+model: SG350XG-24T
+part_number: SX350X-24-K9
+slug: sx350x-24T
+u_height: 1
+is_full_depth: false
+comments: '[SX350X Series Datasheet](https://www.cisco.com/c/en/us/products/collateral/switches/350x-series-stackable-managed-switches/datasheet-c78-735986.html)'
+console-ports:
+  - name: con 1
+    type: rj-45
+power-ports:
+  - name: PS-A
+    type: iec-60320-c14
+    maximum_draw: 33
+  - name: PS-B
+    type: iec-60320-c14
+    maximum_draw: 34
+interfaces:
+  - name: TenGigabitEthernet1/0/1
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/2
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/3
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/4
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/5
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/6
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/7
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/8
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/9
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/10
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/11
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/12
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/13
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/14
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/15
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/16
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/17
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/18
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/19
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/20
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/21
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/22
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/23
+    type: 10gbase-t
+  - name: TenGigabitEthernet1/0/24
+    type: 10gbase-t
+  - name: Management
+    type: 1000base-t
+    mgmt_only: true
+
+