No Windows `build.bat` support in `compile`

[maurycy]

compile is only ./configure now:

pyperformance/pyperformance/compile.py

Lines 279 to 303 in a1d16c7

	def compile(self):
	build_dir = self.conf.build_dir
	_utils.safe_rmtree(build_dir)
	self.app.safe_makedirs(build_dir)
	config_args = []
	if self.branch.startswith("2.") and not _utils.MS_WINDOWS:
	# On Python 2, use UCS-4 for Unicode on all platforms, except
	# on Windows which uses UTF-16 because of its 16-bit wchar_t
	config_args.append("--enable-unicode=ucs4")
	if self.conf.prefix:
	config_args.extend(("--prefix", self.conf.prefix))
	if self.conf.debug:
	config_args.append("--with-pydebug")
	elif self.conf.lto:
	config_args.append("--with-lto")
	if self.conf.jit:
	config_args.append(f"--enable-experimental-jit={self.conf.jit}")
	if self.conf.pkg_only:
	config_args.extend(self.get_package_only_flags())
	if self.conf.debug:
	config_args.append("CFLAGS=-O0")
	configure = os.path.join(self.conf.repo_dir, "configure")
	self.run(configure, *config_args)

There's no support for Windows' build.bat:

https://github.com/python/cpython/blob/bac4fee745569ef7f9bbe465c1c7f66856854af2/PCbuild/build.bat

I have no access to Windows so I cannot do this one.

Related to #463