community/exiv2: split library into subpackge

Packages which require the library don't need the binary installed.

community/exiv2/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=exiv2
 pkgver=0.28.5
-pkgrel=0
+pkgrel=1
 pkgdesc="Exif and Iptc metadata manipulation library and tools."
 url="https://exiv2.org/"
 arch="all"
@@ -15,7 +15,7 @@ makedepends="
 	zlib-dev
 	"
 checkdepends="gtest-dev python3"
-subpackages="$pkgname-dev $pkgname-doc"
+subpackages="$pkgname-dev $pkgname-doc $pkgname-libs"
 source="https://github.com/Exiv2/exiv2/archive/refs/tags/v$pkgver/exiv2-v$pkgver.tar.gz"
 
 # secfixes: