Add README.md for CloudSQL to Supabase migration tool

Author: Domains18

READM.md

@@ -1 +1,17 @@
-# scripts
+# ================================
+# README.md
+# CloudSQL to Supabase Migration Tool
+
+A CLI tool to migrate PostgreSQL databases from Google Cloud SQL to Supabase.
+
+## Usage
+```bash
+python main.py migrate
+python main.py backup
+```
+
+## Setup
+```bash
+pip install -r requirements.txt
+cp .env.example .env
+```