add bounds/crop/rotation flags to sceneitem transform

upd readme
upd changelog

upd tests

minor bump

tests/test_sceneitem.py

@@ -7,9 +7,27 @@ from obsws_cli.app import app
 runner = CliRunner()
 
 
-def test_item_list():
-    """Test the item list command."""
+def test_sceneitem_list():
+    """Test the sceneitem list command."""
     result = runner.invoke(app, ['sceneitem', 'list', 'pytest'])
     assert result.exit_code == 0
     assert 'pytest_input' in result.stdout
     assert 'pytest_input_2' in result.stdout
+
+
+def test_sceneitem_transform():
+    """Test the sceneitem transform command."""
+    result = runner.invoke(
+        app,
+        [
+            'sceneitem',
+            'transform',
+            '--rotation=60',
+            'pytest',
+            'pytest_input_2',
+        ],
+    )
+    assert result.exit_code == 0
+    assert (
+        "Item 'pytest_input_2' in scene 'pytest' has been transformed" in result.stdout
+    )