Add CSV to BabelTests tool

.gitignore

@@ -3,6 +3,8 @@
 
 # Ignore all data files.
 data/
+# But committed test fixtures in tests/data/ should be tracked.
+!tests/data/
 
 # From GitHub
 *.class

pyproject.toml

@@ -7,6 +7,8 @@ readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
     "black>=25.9.0",
+    "click>=8.1",
+    "pyyaml>=6.0",
     "requests>=2.32.5",
     "tqdm>=4.67.1",
     "filelock",
@@ -22,6 +24,18 @@ dependencies = [
 [project.urls]
 Repository = "https://github.com/TranslatorSRI/babel-validation"
 
+[project.scripts]
+csv-to-babeltests = "src.babel_validation.tools.csv_to_babeltests:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+# Package the entire `src/` directory so existing imports
+# (`from src.babel_validation.X import Y`) continue to work after install.
+packages = ["src"]
+
 [tool.pytest.ini_options]
 timeout = 300
 markers = [