Added locksync.ash, updated install script

locksync.ash

@@ -0,0 +1,33 @@
+#!/bin/ash
+#shellcheck shell=dash
+
+export REMOTE_BASE="<RCLONE_PREFIX>"
+export LOG_FILE="/recalbox/share/system/logs/locksync.log"
+
+log() {
+	# $1 = level
+	# $2 = message
+	printf "[%s] [%s] %s\n" "$(date '+%Y-%m-%d %H:%M:%S')" "$1" "$2" >>"$LOG_FILE"
+}
+
+locks=$(find /recalbox/share/saves -name "*.lock")
+if [ -z "$locks" ]; then
+	log "INFO" "No game locks found"
+else
+	while read -r lockfile; do
+		lgame="$(echo "$lockfile" | sed 's/\.lock//')"
+		rgame="$(echo "$lockfile" | sed 's|/recalbox/share/roms/||' | sed 's/\.lock//')"
+		if [ -f "$lgame" ]; then
+			log "INFO" "Game found: $lgame"
+		else
+			continue
+		fi
+		if rclone copyto "$lgame" "${REMOTE_BASE}/${rgame}"; then
+			log "INFO" "Game synced: $rgame"
+			rm "$lockfile"
+		else
+			log "WARN" "Could not sync game $rgame"
+			log "INFO" "Lockfile $lockfile not removed"
+		fi
+	done <"$locks"
+fi