Add section on dev and test for galactic

Author: wnagele

src/content/docs/docs/galactic-vpc/index.mdx

@@ -23,6 +23,13 @@ prefixes across a given VPC. This is achieved using an SRv6 (Segment Routing IPv
 network through which the necessary encapsulated packets are routed.
 
 
+### Developing and Testing it
+
+Our [galactic-lab](https://github.com/datum-cloud/galactic-lab) is a one-stop-shop to 
+set up, test and develop the Galactic components. Check out the documentation there 
+for step-by-step instructions on how to get started.
+
+
 ## Components
 
 ![Components](/images/galactic/components.svg)