fix: add top-level getting started section

Signed-off-by: Richard Gebhardt <[email protected]>

Author: gebhardtr

README.md

@@ -9,6 +9,11 @@ Prototypes and proofs-of-concept
 | [server](./server) | Example of MCP authentication using OCI IDCS and Oauth |
 | [agent](./agent) | An example agent developed using LangGraph that drives the OCI CLI |
 
+## Getting started
+
+Refer to the README in each project subdirectory for specific instructions on how to get started
+with that project.
+
 ## Contributing
 
 This project welcomes contributions from the community. Before submitting a pull