Fixed #151 pip installation not running (#152)

Switched build system to setuptools

Author: Rowan

pyproject.toml

@@ -1,6 +1,5 @@
 [build-system]
-requires = ["flit_core >=2,<4"]
-build-backend = "flit_core.buildapi"
+requires = ["setuptools", "wheel"]
 
 [tool.flit.metadata]
 module = "mmpy_bot"