audacity: add nyquist and plug-ins directories

Fixes #24118.

srcpkgs/audacity/template

@@ -1,7 +1,7 @@
 # Template file for 'audacity'
 pkgname=audacity
 version=2.4.1
-revision=1
+revision=2
 wrksrc="${pkgname}-Audacity-${version}"
 build_style=gnu-configure
 configure_args="--with-ffmpeg=system --with-libsndfile=system --with-expat=system
@@ -30,6 +30,9 @@ if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
 fi
 
 post_install() {
+	vcopy nyquist /usr/share/audacity
+	vcopy plug-ins /usr/share/audacity
+
 	rm ${DESTDIR}/usr/share/doc/${pkgname}/LICENSE.txt
 	vlicense LICENSE.txt LICENSE
 }