Add project foundation: configuration, package skeleton, Doxyfile, CI and ADRs

Task: MIL-001#1
Refs #2
Refs #3
Refs #4
Refs #5
Refs #6

tests/test_package.py

@@ -0,0 +1,29 @@
+"""Smoke tests of the package skeleton."""
+
+from importlib import resources
+
+from nato_alphabet import constants
+
+EXPECTED_ROW_COUNT = 26
+
+
+def test_data_file_exists_in_package() -> None:
+    data_file = (
+        resources.files(constants.DATA_PACKAGE)
+        / constants.DATA_DIRECTORY
+        / constants.DATA_FILE_NAME
+    )
+
+    assert data_file.is_file()
+
+
+def test_data_file_has_one_row_per_letter() -> None:
+    data_file = (
+        resources.files(constants.DATA_PACKAGE)
+        / constants.DATA_DIRECTORY
+        / constants.DATA_FILE_NAME
+    )
+
+    lines = data_file.read_text(encoding="utf-8").splitlines()
+
+    assert len(lines) - 1 == EXPECTED_ROW_COUNT