move build/command/options to include/option.sh

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/option.sh

@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: MIT
+# SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
+
+listitems()
+{
+	rval=1
+	[ ! -d "${1}" ] && \
+		printf "listitems: directory '%s' doesn't exist" "${1}" && \
+		    return 1
+	for x in "${1}/"*; do
+		# -e used because this is for files *or* directories
+		[ -e "${x}" ] || continue
+		[ "${x##*/}" = "build.list" ] && continue
+		printf "%s\n" "${x##*/}" 2>/dev/null
+		rval=0
+	done
+	return ${rval}
+}