feat(notion): Initial PoC for Notion Integration

- Added documentation for Notion setup and resources (notion_integration.md).

- Added scripts for authentication test, database creation, and product insertion.

- Successfully tested connection and data mapping for 'RoboPlanet Product Master'.

hello_notion.py

@@ -0,0 +1,72 @@
+import requests
+import json
+import os
+
+TOKEN_FILE = 'notion_api_key.txt'
+PARENT_PAGE_ID = "2e088f42-8544-8024-8289-deb383da3818" # "Roboplanet" page
+
+def main():
+    try:
+        with open(TOKEN_FILE, 'r') as f:
+            token = f.read().strip()
+    except FileNotFoundError:
+        print(f"Error: Could not find '{TOKEN_FILE}'")
+        return
+
+    print(f"Creating 'Hello World' page under parent {PARENT_PAGE_ID}...")
+
+    url = "https://api.notion.com/v1/pages"
+    headers = {
+        "Authorization": f"Bearer {token}",
+        "Notion-Version": "2022-06-28",
+        "Content-Type": "application/json"
+    }
+
+    payload = {
+        "parent": { "page_id": PARENT_PAGE_ID },
+        "properties": {
+            "title": [
+                {
+                    "text": {
+                        "content": "Hello World"
+                    }
+                }
+            ]
+        },
+        "children": [
+            {
+                "object": "block",
+                "type": "paragraph",
+                "paragraph": {
+                    "rich_text": [
+                        {
+                            "type": "text",
+                            "text": {
+                                "content": "This page was created automatically by the GTM Engine Bot."
+                            }
+                        }
+                    ]
+                }
+            }
+        ]
+    }
+
+    try:
+        response = requests.post(url, headers=headers, json=payload)
+        response.raise_for_status()
+        
+        data = response.json()
+        print("\n=== SUCCESS ===")
+        print(f"New page created!")
+        print(f"URL: {data.get('url')}")
+        
+    except requests.exceptions.HTTPError as e:
+        print(f"\n=== ERROR ===")
+        print(f"HTTP Error: {e}")
+        print(f"Response: {response.text}")
+    except Exception as e:
+        print(f"\n=== ERROR ===")
+        print(f"An error occurred: {e}")
+
+if __name__ == "__main__":
+    main()