fix: Ensure the code compiles and add a test example

- Fixed compilation issues and ensured the code builds successfully
- Created an example to test the client functionality
- Started implementing additional endpoints

examples/clients/jina.vsh

@@ -0,0 +1,6 @@
+#!/usr/bin/env -S v -n -w -gc none  -cc tcc -d use_openssl -enable-globals run
+
+import freeflowuniverse.herolib.clients.jina
+
+jina_client := jina.get()!
+println('jina: ${jina_client}')