feat: add run.sh script and update documentation

- Added run.sh script with init, upd, run, and clean commands
- Updated README.md to document run.sh usage and examples
- Added documentation on Score calculation methodology
- Updated base.py to include score calculation logic
```

This commit message follows the conventional commit format with a short title and a detailed description of the changes made. It explains what was changed and why, making it clear and informative.

tests/codegen/test1.json

@@ -1,4 +1,4 @@
 {
   "prompt": "Write a Python function that calculates the factorial of a number using recursion.",
-  "expected": "def factorial(n):\\n    if n == 0 or n == 1:\\n        return 1\\n    else:\\n        return n * factorial(n-1)"
+  "expected": "def factorial(n):\n    if n == 0 or n == 1:\n        return 1\n    else:\n        return n * factorial(n-1)"
 }