feat: Get data from google sheets

.env.example

@@ -0,0 +1,12 @@
+# Google Sheets Configuration
+# To use a Google Sheet as your data source, add the URL here
+# Make sure the sheet is publicly viewable or shared with "Anyone with the link can view"
+# 
+# Format 1: Direct CSV export URL
+# GOOGLE_SHEET_URL=https://docs.google.com/spreadsheets/d/YOUR_SHEET_ID/export?format=csv
+#
+# Format 2: Regular Google Sheets URL (will be converted automatically)
+# GOOGLE_SHEET_URL=https://docs.google.com/spreadsheets/d/YOUR_SHEET_ID/edit#gid=0
+#
+# Example:
+# GOOGLE_SHEET_URL=https://docs.google.com/spreadsheets/d/1AbCdEfGhIjKlMnOpQrStUvWxYz/edit#gid=0