testing/pn: new aport

We want to use this libphonenumber cli in SXMO. Currently vendoring it in sxmo-utils, but it would be better to be upstreamed as a distinct package.

This creates packages pn, pn-doc, and pn-gawk.

https://github.com/Orange-OpenSource/pn

testing/pn/APKBUILD

+# Contributor:
+# Maintainer:
+pkgname=pn
+pkgver=0_git20210128
+pkgrel=0
+_commit="41e1215397129ed0d42b5f137fb35b5e0648edda"
+arch="all"
+url="https://github.com/Orange-OpenSource/pn"
+pkgdesc="libphonenumber command-line wrapper"
+source="$pkgname-$_commit.tar.gz::$url/archive/$_commit.tar.gz"
+license="Apache-2.0"
+makedepends="cmake icu-dev libphonenumber-dev gawk"
+builddir="$srcdir/$pkgname-$_commit"
+options="!check"
+subpackages="$pkgname-doc $pkgname-gawk"
+
+build() {
+	if [ "$CBUILD" != "$CHOST" ]; then
+		CMAKE_CROSSOPTS="-DCMAKE_SYSTEM_NAME=Linux -DCMAKE_HOST_SYSTEM_NAME=Linux"
+	fi
+	cmake -B build \
+		-DCMAKE_INSTALL_PREFIX=/usr \
+		-DCMAKE_INSTALL_LIBDIR=lib \
+		-DBUILD_SHARED_LIBS=True \
+		-DCMAKE_BUILD_TYPE=None \
+		-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
+		-DCMAKE_C_FLAGS="$CFLAGS" \
+		$CMAKE_CROSSOPTS
+	cmake --build build
+}
+
+gawk() {
+	mkdir -p $subpkgdir/usr/lib
+	mv $pkgdir/usr/lib/gawk $subpkgdir/usr/lib/
+}
+
+package() {
+	DESTDIR="$pkgdir" cmake --build build --target install
+	mkdir $pkgdir/usr/share
+	mv $pkgdir/usr/man $pkgdir/usr/share/
+}
+
+sha512sums="
+5910b22743181d9ff4ecf5e1947d1e175dd2d2667972d682a8e55631b5a0aa33f63d782aeeca5da4ef1528cfbe7cf5406d762c4e631ba041e82f4ce950782a5c  pn-41e1215397129ed0d42b5f137fb35b5e0648edda.tar.gz
+"