Fix missing repo metadata

Add missing entries to __about__
Add missing tests/__init__ file
Add missing tests to test_about
Fix trailing whitespace in openapi

tests/test_about.py

@@ -9,14 +9,25 @@ from imagemonk import __about__
 def test_about():
     """Test metadata values"""
 
-    with (Path(__file__).parent.parent / "pyproject.toml").open() as infile:
-        about = toml.load(infile)
+    with (Path(__file__).resolve().parent.parent / "pyproject.toml").open() as infile:
+        pyproject = toml.load(infile)
 
-    assert about["tool"]["poetry"]["name"] == __about__.__title__
-    assert about["tool"]["poetry"]["version"] == __about__.__version__
-    assert all(
-        author in about["tool"]["poetry"]["authors"] for author in __about__.__authors__
+    assert pyproject["tool"]["poetry"]["name"] == __about__.__title__
+    assert pyproject["tool"]["poetry"]["version"] == __about__.__version__
+    assert pyproject["tool"]["poetry"]["license"] == __about__.__license__
+    assert pyproject["tool"]["poetry"]["description"] == __about__.__summary__
+    assert pyproject["tool"]["poetry"]["repository"] == __about__.__url__
+    assert (
+        all(
+            item in __about__.__authors__
+            for item in pyproject["tool"]["poetry"]["authors"]
+        )
+        is True
     )
-    assert all(
-        author in __about__.__authors__ for author in about["tool"]["poetry"]["authors"]
+    assert (
+        all(
+            item in pyproject["tool"]["poetry"]["authors"]
+            for item in __about__.__authors__
+        )
+        is True
     )