add switch docs

packages/sampleprj/src/mainswitch.ts

@@ -0,0 +1,6 @@
+import { gpio } from "@devicescript/core"
+import { startSwitch } from "@devicescript/servers"
+
+const switch_ = startSwitch({
+    pin: gpio(2),
+})

vscode/src/server-info.json

@@ -293,7 +293,7 @@
             "imports": {
                 "startBME680": "@devicescript/drivers"
             },
-            "snippet": "const { temperature, humidity, pressure, aqi } = await startBME680()\n"
+            "snippet": "const { temperature, humidity, pressure, airQualityIndex } = await startBME680()\n"
         }
     ]
 }

website/docs/api/servers/switch.md

@@ -0,0 +1,30 @@
+---
+description: Mounts a switch server
+title: Switch
+---
+
+# Switch
+
+The `startSwitch` function starts a [switch](https://microsoft.github.io/jacdac-docs/services/switch) server on the device
+and returns a [client](/api/clients/switch).
+
+```ts
+import { gpio } from "@devicescript/core"
+import { startSwitch } from "@devicescript/servers"
+
+const switch = startSwitch({
+    pin: gpio(2),
+})
+```
+
+The [service instance name](https://microsoft.github.io/jacdac-docs/services/_base/) is automatically set to the variable name. In this example, it is set to `switch`.
+
+## Options
+
+### pin
+
+The pin hardware identifier on which to mount the relay.
+
+### options
+
+Other configuration options are available in the options parameter.