refactor: rename project from 'hello-world' to 'rohas-app' and remove unused generated files

Author: sophatvathana

.DS_Store

@@ -49,4 +49,3 @@ coverage/
 
 # Rohas compiled output
 .rohas/
-src/generated/

docs/.DS_Store

@@ -1,5 +1,5 @@
 [project]
-name = "hello-world"
+name = "rohas-app"
 version = "0.1.0"
 description = "Rohas event-driven application"
 requires-python = ">=3.9"

examples/hello-world/.gitignore

@@ -0,0 +1,10 @@
+model HealthResponse {
+  status  String
+  timestamp String
+}
+
+api Health {
+  method: GET
+  path: "/health"
+  response: HealthResponse
+}