Add a test for checking module type on setup

tests/data/test_modules/example_extractor/__manifest__.py

@@ -0,0 +1,11 @@
+{
+    # Display Name of your module
+    "name": "Example Extractor",
+    # Optional version number, for your own versioning purposes
+    "version": 2.0,
+    # The type of the module, must be one (or more) of the built in module types
+    "type": ["extractor"],
+    # a boolean indicating whether or not a module requires additional user setup before it can be used
+    # for example: adding API keys, installing additional software etc.
+    "requires_setup": False,
+}

tests/data/test_modules/example_extractor/example_extractor.py

@@ -0,0 +1,6 @@
+from auto_archiver.core import Extractor
+
+
+class ExampleExtractor(Extractor):
+    def download(self, item):
+        print("download")