feat: add project setup and dependencies

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_packages
+
+setup(
+    name="x-space-downloader",
+    version="0.1.0",
+    packages=find_packages(),
+    install_requires=[
+        "yt-dlp>=2024.0.0",
+        "click>=8.0.0",
+    ],
+    entry_points={
+        "console_scripts": [
+            "x-space-dl=src.main:cli",
+        ],
+    },
+    python_requires=">=3.8",
+)