New package: python3-importlib_metadata-4.0.1

This package was dropped earlier as its functionality was
added into Python 3.8 standard library.
However, this package contains features that are not (yet) part
of Python's standard library. Those features are needed by
python3-keyring package. So, re-introduce this package.

See: jaraco/keyring#499 (comment)

srcpkgs/python3-importlib_metadata/template

@@ -0,0 +1,16 @@
+# Template file for 'python3-importlib_metadata'
+pkgname=python3-importlib_metadata
+version=4.0.1
+revision=1
+wrksrc="importlib_metadata-${version}"
+build_style=python3-module
+hostmakedepends="python3-setuptools_scm python3-toml"
+depends="python3-zipp"
+short_desc="Read metadata from Python packages (Python 3)"
+maintainer="Lorem <notloremipsum@protonmail.com>"
+license="Apache-2.0"
+homepage="https://github.com/python/importlib_metadata"
+distfiles="${PYPI_SITE}/i/importlib_metadata/importlib_metadata-${version}.tar.gz"
+checksum=8c501196e49fb9df5df43833bdb1e4328f64847763ec8a50703148b73784d581
+# Needs unpackaged "pyfakefs"
+make_check=no