add SIP to OSC example

src/content/docs/examples/dial-a-cue.mdx

@@ -0,0 +1,32 @@
+---
+title: SIP > OSC
+sidebar:
+    order: 2
+---
+
+import { Code } from '@astrojs/starlight/components';
+
+This config starts an SIP server listening on port `5060`. Any incoming call will result in a OSC message being sent to `127.0.0.1:53000` with the address set to [fire a QLab cue](https://qlab.app/docs/v5/scripting/osc-dictionary-v5/#/cue/{cue_number}/go) with the dialed number as the cue number. This was tested with a cheap SIP gateway like [this one](https://www.grandstream.com/products/gateways-and-atas/analog-telephone-adaptors/product/ht802).
+
+export const example = `
+modules:
+  - id: sip
+    type: sip.call.server
+    params:
+      port: 5060
+  - id: udp
+    type: net.udp.client
+    params:
+      host: 127.0.0.1
+      port: 53000
+routes:
+  - input: sip
+    processors:
+      - type: osc.message.create
+        params:
+          address: "/cue/{{.To}}/go"
+      - type: osc.message.encode
+    output: udp
+`
+
+<Code code={example} title="config.yaml" lang="yaml"/>