add ninja package under `core-devel`

core-devel/ninja/PKGBUILD

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+pkgname=ninja
+pkgver=1.11.0
+pkgrel=1
+pkgdesc="a small build system with a focus on speed."
+arch=(x86_64)
+url="https://github.com/ninja-build/ninja"
+license=(GPL2)
+groups=()
+depends=(python)
+
+source=(
+	"${url}/archive/refs/tags/v${pkgver}.tar.gz"
+)
+sha256sums=(
+	"3c6ba2e66400fe3f1ae83deb4b235faf3137ec20bd5b08c29bfc368db143e4c6"
+)
+
+unpacked_dir="${srcdir}/${pkgname}-${pkgver}"
+
+build() {
+	cd $PWD/$unpacked_dir
+	./configure.py --bootstrap
+}
+
+package() {
+	cd $PWD/$unpacked_dir
+	install -d "${pkgdir}/usr/bin"
+	install -m 0755 ninja "${pkgdir}/usr/bin"
+}