New component hlk_sw16 relay module (#7250)

* New component hlk_sw16 relay module.

* Update to new config schema.

* format fixes

* add keys

* add relayid

* add keys

* fix

source/_components/hlk_sw16.markdown

@@ -0,0 +1,90 @@
+---
+layout: page
+title: "HLK-SW16 Relay Module"
+description: "Instructions on how to integrate HLK-SW16 relay into Home Assistant."
+date: 2018-10-29 20:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: hlktech.jpg
+ha_category: DIY
+ha_release: 0.84
+ha_iot_class: "Local Push"
+---
+
+The [HLK-SW16](http://www.hlktech.net/product_detail.php?ProId=48) by [Hi-Link](http://www.hlktech.net/) is a simple networkable 16 port relay device.
+
+To enable it, add the following lines to your `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+hlk_sw16:
+  relay1:
+    host: 10.225.225.53
+    switches:
+      0:
+        name: relay1-0
+      1:
+        name: relay1-1
+      2:
+        name: relay1-2
+      3:
+        name: relay1-3
+      4:
+        name: relay1-4
+      5:
+        name: relay1-5
+      6:
+        name: relay1-6
+      7:
+        name: relay1-7
+      8:
+        name: relay1-8
+      9:
+        name: relay1-9
+      a:
+        name: relay1-a
+      b:
+        name: relay1-b
+      c:
+        name: relay1-c
+      d:
+        name: relay1-d
+      e:
+        name: relay1-e
+      f:
+        name: relay1-f
+```
+
+{% configuration %}
+deviceid:
+  description: The array that contains the HLK-SW16 devices.
+  required: true
+  type: map
+  keys:
+    host:
+      description: The IP address or hostname of the HLK-SW16.
+      required: true
+      type: string
+    port:
+      description: The control port for the relays.
+      required: false
+      type: integer
+      default: 8080
+    switches:
+      description: The array that contains the relays.
+      required: true
+      type: map
+      keys:
+        relayid:
+          description: The array that contains the HLK-SW16 relays, each must be a number between 0 and 9 or letter between a and f which each corresponds to a labled relay switch on the HLK-SW16.
+          required: false
+          type: map
+          keys:
+            name:
+              description: The name used to display the switch in the frontend.
+              required: false
+              type: string
+              default: relayid
+{% endconfiguration %}

source/_components/switch.hlk_sw16.markdown

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+---
+layout: page
+title: "HLK-SW16 Relay Module"
+description: "Instructions on how to integrate HLK-SW16 relay switches into Home Assistant."
+date: 2018-10-29 20:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+logo: hlktech.jpg
+ha_category: Switch
+ha_release: 0.84
+ha_iot_class: "Local Push"
+---
+
+See the [HLK-SW16 main component](/components/hlk_sw16/) for configuration instructions.
+
+The HLK-SW16 is a simple 16 port relay switch.