feat(server,module): add cast module

pkg/module/cast/testdata/cast.js

@@ -0,0 +1,21 @@
+
+cast.refreshDevices('5s')
+  .then(function(devices) {  
+    console.log(devices)
+  
+    if (devices === null) {
+      throw new Error("devices should not be null");
+    }
+    
+    if (devices.length === 0) {
+      throw new Error("devices.length should not be 0");
+    }
+
+    return devices
+  })
+  .then(function(devices) {
+    return cast.getStatus(devices[0].uuid)
+  })
+  .then(function(status) {
+    console.log(status)
+  })

pkg/module/cast/testdata/refresh_devices.js

@@ -0,0 +1,6 @@
+function refreshDevices() {
+  return cast.refreshDevices('5s')
+    .then(function(devices) {
+      return devices
+    })
+}