restructure the project for packaging

pyproject.toml

@@ -0,0 +1,40 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "auracaster"
+version = "0.1.0"
+description = "Airport Announcement System"
+readme = "README.md"
+authors = [
+    {name = "Airport Team"}
+]
+requires-python = ">=3.8"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+]
+dependencies = [
+    "streamlit>=1.25.0",
+    "requests>=2.28.0",
+    "fastapi>=0.95.0",
+    "uvicorn>=0.22.0",
+    "pydantic>=1.10.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+]
+
+[tool.setuptools]
+package-dir = {"" = "src"}
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[project.scripts]
+auracaster-webui = "auracaster_webui.main:run_app"
+auracaster-mock = "mock_backend.main:run_mock"