Stage move API now works

The test plugin seems to have problems
calling setPosition more than once.
We don't understand this...

Co-authored-by: Kaspar Emanuel <kaspar@monostable.co.uk>

openflexure_microscope/api/static/public/OpenFlexureSnapImageTemplate.imjoy.html

@@ -0,0 +1,43 @@
+<docs>
+[TODO: write documentation for this plugin.]
+</docs>
+
+<config lang="json">
+{
+  "name": "OpenFlexureSnapImageTemplate",
+  "type": "web-worker",
+  "tags": [],
+  "ui": "",
+  "version": "0.1.0",
+  "cover": "",
+  "description": "[TODO: describe this plugin with one sentence.]",
+  "icon": "extension",
+  "inputs": null,
+  "outputs": null,
+  "api_version": "0.1.8",
+  "env": "",
+  "permissions": [],
+  "requirements": [],
+  "dependencies": []
+}
+</config>
+
+<script lang="javascript">
+class ImJoyPlugin {
+  async setup() {
+    api.log('initialized')
+  }
+
+  async run(ctx) {
+    // get a list of service
+    const services = await api.getServices({name: "OpenFlexure"});
+    // get the first service
+    const ofm = services[0];
+    // snap an image
+    await ofm.snapImage();
+    console.log("snapped an image");
+  }
+}
+
+api.export(new ImJoyPlugin())
+</script>