community: rename glibmm -> glibmm2.66

Rename the backwards compat version of glibmm to be versioned

community/glibmm/APKBUILD → community/glibmm2.66/APKBUILD

 # Contributor: Rasmus Thomsen <oss@cogitri.dev>
 # Contributor: Natanael Copa <ncopa@alpinelinux.org>
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
-pkgname=glibmm
+pkgname=glibmm2.66
 pkgver=2.66.7
 pkgrel=0
 pkgdesc="C++ wrapper for the GLib toolkit"
@@ -11,6 +11,8 @@ license="LGPL-2.1-or-later"
 makedepends="glib-dev libsigc++-dev perl meson m4"
 subpackages="$pkgname-dev"
 source="https://download.gnome.org/sources/glibmm/${pkgver%.*}/glibmm-$pkgver.tar.xz"
+builddir="$srcdir/glibmm-$pkgver"
+replaces="glibmm"
 
 build() {
 	abuild-meson \