python-pyproject-hooks: Add new host-only package

From the README:

This is a low-level library for calling build-backends in
pyproject.toml-based project. It provides the basic functionality to
help write tooling that generates distribution files from Python
projects.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
(cherry picked from commit f6d68782d9)

lang/python/python-pyproject-hooks/Makefile

@@ -0,0 +1,52 @@
+#
+# Copyright (C) 2023 Jeffery To
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=python-pyproject-hooks
+PKG_VERSION:=1.0.0
+PKG_RELEASE:=1
+
+PYPI_NAME:=pyproject_hooks
+PKG_HASH:=f271b298b97f5955d53fb12b72c1fb1948c22c1a6b70b315c54cedaca0264ef5
+
+PKG_LICENSE:=MIT
+PKG_LICENSE_FILES:=LICENSE
+PKG_MAINTAINER:=Jeffery To <jeffery.to@gmail.com>
+
+PKG_HOST_ONLY:=1
+HOST_BUILD_DEPENDS:=python3/host python-flit-core/host python-installer/host python-tomli/host
+
+include ../pypi.mk
+include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/host-build.mk
+include ../python3-package.mk
+include ../python3-host-build.mk
+
+define Package/python3-pyproject-hooks
+  SECTION:=lang
+  CATEGORY:=Languages
+  SUBMENU:=Python
+  TITLE:=Wrappers to call pyproject.toml-based build backend hooks
+  URL:=https://github.com/pypa/pyproject-hooks
+  DEPENDS:=+python3-light
+  BUILDONLY:=1
+endef
+
+define Package/python3-pyproject-hooks/description
+This is a low-level library for calling build-backends in
+pyproject.toml-based project. It provides the basic functionality to
+help write tooling that generates distribution files from Python
+projects.
+endef
+
+Host/Compile=$(Py3Host/Compile/Bootstrap)
+
+$(eval $(call Py3Package,python3-pyproject-hooks))
+$(eval $(call BuildPackage,python3-pyproject-hooks))
+$(eval $(call BuildPackage,python3-pyproject-hooks-src))
+$(eval $(call HostBuild))