squeezelite: add version test override

The generic package test greps executable output for PKG_VERSION, which
cannot match here: PKG_VERSION separates the build number with a dot for
apk, while squeezelite reports it with a hyphen.

Derive the expected string from PKG_VERSION rather than hardcoding it, so
the check keeps working on later updates.

Signed-off-by: Kel Modderman <kelvmod@gmail.com>

sound/squeezelite/test-version.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# shellcheck shell=busybox
+
+# PKG_VERSION dots the build number for apk; squeezelite reports it hyphenated
+version=$(echo "$PKG_VERSION" | sed 's/\.\([^.]*\)$/-\1/')
+
+case "$PKG_NAME" in
+squeezelite-full | squeezelite-dynamic | squeezelite-custom)
+	squeezelite '-?' 2>&1 | grep -F "Squeezelite ${version},"
+	;;
+*)
+	echo "Untested package: $PKG_NAME" >&2
+	exit 1
+	;;
+esac