feat: add initial project structure with core files and configuration

Set up the yura async AI client project scaffold including .gitignore, build system configuration in pyproject.toml and setup.cfg, a make script for venv and build automation, the AsyncClient class in src/yura/client.py with websocket-based chat communication, and pre-built distribution artifacts for version 13.3.7.

make

@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+import pathlib 
+import os 
+import sys
+
+if not pathlib.Path(".venv").exists():
+    os.system("python3 -m venv .venv")
+
+if "build" in sys.argv:
+    os.system("./.venv/bin/python -m pip install build")
+    os.system("./.venv/bin/python -m build .")
+    os.system("./.venv/bin/python -m pip install black")
+    os.system("./.venv/bin/python -m black .")
+
+
+