⚡️ Refactor LiteyukiBot structure and add configuration loading

- Updated .gitignore to include .pytest_cache
- Replaced FastAPI with Daemon in main.py for bot execution
- Enhanced pyproject.toml with new dependencies and dev group
- Added iniconfig package for pytest configuration
- Created initial structure for liteyukibot with context management
- Implemented configuration loading functions for YAML, JSON, and TOML
- Added tests for configuration loading with temporary files
- Set up GitHub Actions for pytest testing on push and pull requests

liteyukibot/context/__init__.py

@@ -0,0 +1,15 @@
+class Context:
+    def __init__(self):
+        self._context = {}
+
+    def set(self, key, value):
+        self._context[key] = value
+
+    def get(self, key):
+        return self._context.get(key)
+
+    def clear(self):
+        self._context.clear()
+
+    def __repr__(self):
+        return f"Context({self._context})"