setup: Move setuptools requirment to pyproject.toml

PEP 517 specify a new format for build systems and PEP 518 specify how
we should require packages for our build system. Setuptools support PEP
517 so we should use it that way.

pyproject.toml

@@ -1,3 +1,7 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
 [tool.black]
 line-length = 120
 

setup.py

@@ -108,7 +108,7 @@ if __name__ == "__main__":
         author="Frida Developers",
         author_email="oleavr@frida.re",
         url="https://frida.re",
-        install_requires=["setuptools", "typing_extensions; python_version<'3.11'"],
+        install_requires=["typing_extensions; python_version<'3.11'"],
         python_requires=">=3.7",
         license="wxWindows Library Licence, Version 3.1",
         keywords="frida debugger dynamic instrumentation inject javascript windows macos linux ios iphone ipad android qnx",