[mod] addition of various type hints / engine processors

Continuation of #5147 .. typification of the engine processors.

BTW:

- removed obsolete engine property https_support
- fixed & improved currency_convert
- engine instances can now implement a engine.setup method

[#5147] https://github.com/searxng/searxng/pull/5147

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

tests/unit/processors/test_online.py

@@ -20,7 +20,7 @@ class TestOnlineProcessor(SearxTestCase):
 
     def test_get_params_default_params(self):
         engine = engines.engines[TEST_ENGINE_NAME]
-        online_processor = online.OnlineProcessor(engine, TEST_ENGINE_NAME)
+        online_processor = online.OnlineProcessor(engine)
         search_query = SearchQuery('test', [EngineRef(TEST_ENGINE_NAME, 'general')], 'all', 0, 1, None, None, None)
         params = self._get_params(online_processor, search_query, 'general')
         self.assertIn('method', params)
@@ -32,7 +32,7 @@ class TestOnlineProcessor(SearxTestCase):
 
     def test_get_params_useragent(self):
         engine = engines.engines[TEST_ENGINE_NAME]
-        online_processor = online.OnlineProcessor(engine, TEST_ENGINE_NAME)
+        online_processor = online.OnlineProcessor(engine)
         search_query = SearchQuery('test', [EngineRef(TEST_ENGINE_NAME, 'general')], 'all', 0, 1, None, None, None)
         params = self._get_params(online_processor, search_query, 'general')
         self.assertIn('User-Agent', params['headers'])

tests/unit/test_webapp.py

@@ -24,7 +24,7 @@ class ViewsTestCase(SearxTestCase):  # pylint: disable=too-many-public-methods
         def dummy(*args, **kwargs):  # pylint: disable=unused-argument
             pass
 
-        self.setattr4test(searx.search.processors, 'initialize_processor', dummy)
+        self.setattr4test(searx.search.processors.PROCESSORS, 'init', dummy)
 
         # set some defaults
         test_results = [