Add make target to deploy to Firebase

The configuration file has been split into 2: one for development mode
and another one for production mode.

Change-Id: I12917cd79c95642adc30004be5bc1a927bca389b
diff --git a/frontend/src/config.dev.json5 b/frontend/src/config.dev.json5
new file mode 100644
index 0000000..07bff27
--- /dev/null
+++ b/frontend/src/config.dev.json5
@@ -0,0 +1,8 @@
+{
+  // Details for the Sign In with Google functionality
+  google: {
+    clientId: '223047594100-ha7istt4csc0mlq11heogk7bqvmpbqo0.apps.googleusercontent.com',
+  },
+  // URL of the GRPC host
+  grpcWebHost: 'http://localhost:8081'
+}