Set up project skeleton and tooling for MIL-001

Add pyproject.toml (Python >=3.13, no runtime dependencies, pytest, ruff
and mypy as dev extras), a Doxyfile that scans src/, the
src/coffee_machine package with stub constants and main modules, and a
pytest smoke test. Ignore Doxygen output in .gitignore.

Closes #1
Closes #2
Closes #3
Closes #4
Refs #5

Task: MIL-001#1
Task: MIL-001#2
Task: MIL-001#3
Task: MIL-001#4

.gitignore

@@ -174,3 +174,6 @@ cython_debug/
 # PyPI configuration file
 .pypirc
 
+
+# Doxygen output
+docs/doxygen/

Doxyfile

@@ -0,0 +1,14 @@
+# Doxygen configuration for the coffee machine. Run: doxygen Doxyfile
+PROJECT_NAME           = "Coffee Machine"
+PROJECT_BRIEF          = "Day 15 of Udemy's 100 Days of Code Python bootcamp"
+OUTPUT_DIRECTORY       = docs/doxygen
+INPUT                  = src
+FILE_PATTERNS          = *.py
+RECURSIVE              = YES
+OPTIMIZE_OUTPUT_JAVA   = YES
+EXTRACT_ALL            = YES
+JAVADOC_AUTOBRIEF      = YES
+GENERATE_HTML          = YES
+GENERATE_LATEX         = NO
+QUIET                  = YES
+WARN_IF_UNDOCUMENTED   = YES

pyproject.toml

@@ -0,0 +1,32 @@
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "coffee-machine"
+version = "0.1.0"
+description = "Console coffee machine: Day 15 of Udemy's 100 Days of Code Python bootcamp."
+readme = "README.md"
+requires-python = ">=3.13"
+license = { file = "LICENSE" }
+dependencies = []
+
+[project.optional-dependencies]
+dev = ["pytest>=8", "ruff", "mypy"]
+
+[project.scripts]
+coffee-machine = "coffee_machine.main:main"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+pythonpath = ["src"]
+
+[tool.ruff]
+line-length = 88
+
+[tool.mypy]
+strict = true
+mypy_path = "src"

src/coffee_machine/__init__.py

@@ -0,0 +1,4 @@
+"""!
+@file __init__.py
+@brief Console coffee machine package.
+"""

src/coffee_machine/__main__.py

@@ -0,0 +1,8 @@
+"""!
+@file __main__.py
+@brief Allow `python -m coffee_machine`.
+"""
+
+from coffee_machine.main import main
+
+main()

src/coffee_machine/constants.py

@@ -0,0 +1,6 @@
+"""!
+@file constants.py
+@brief Constants for the coffee machine: menu, coins and starting resources.
+
+The values are added in MIL-002 ("Define constants").
+"""

src/coffee_machine/main.py

@@ -0,0 +1,12 @@
+"""!
+@file main.py
+@brief Entry point of the coffee machine.
+"""
+
+
+def main() -> None:
+    """!
+    @brief Run the coffee machine.
+
+    The ordering loop is added in MIL-002 ("Implement main loop").
+    """

tests/test_smoke.py

@@ -0,0 +1,13 @@
+"""!
+@file test_smoke.py
+@brief Smoke test that the package imports.
+"""
+
+from coffee_machine import main as main_module
+
+
+def test_main_is_callable() -> None:
+    """!
+    @brief The entry point runs without error.
+    """
+    main_module.main()