chore: improved python testing

Allows usage of pytest for testing python code.

pytest.ini

+[pytest]
+python_files = *.py
+testpaths = src/python/boytacean/test

src/python/boytacean/test/base.py

@@ -17,3 +17,5 @@ class BaseTest(unittest.TestCase):
             gb.next_frame()
 
         self.assertEqual(gb.rom_title, "POCKET-DEMO")
+        self.assertEqual(gb.boot_rom_s, "DMG Bootix")
+        self.assertEqual(gb.clock_freq_s, "4.19 Mhz")