fix: add proper entry-points.json schema for line_by_line_test

Author: AAgnihotry

packages/uipath/samples/line_by_line_test/entry-points.json

@@ -1,5 +1,38 @@
 {
-    "$schema": "https://cloud.uipath.com/draft/2024-12/entry-point",
-    "$id": "entry-points.json",
-    "entryPoints": []
-}
+  "$schema": "https://cloud.uipath.com/draft/2024-12/entry-point",
+  "$id": "entry-points.json",
+  "entryPoints": [
+    {
+      "filePath": "main",
+      "uniqueId": "main",
+      "type": "function",
+      "input": {
+        "type": "object",
+        "properties": {
+          "items": {
+            "type": "array",
+            "items": {
+              "type": "string"
+            }
+          }
+        },
+        "description": "Input schema.",
+        "required": [
+          "items"
+        ]
+      },
+      "output": {
+        "type": "object",
+        "properties": {
+          "result": {
+            "type": "string"
+          }
+        },
+        "description": "Output schema.",
+        "required": [
+          "result"
+        ]
+      }
+    }
+  ]
+}