lscss: Implement zsh and bash autocompletion

Add generation of shell autocompletion scripts.
Modify --devtype flag description to make it
compatible with zsh autocompletion.

Acked-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Szabina Korbai <szkorbai@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

zconf/css/autocompletion_generator_host.c

@@ -0,0 +1,16 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright IBM Corp.
+ */
+
+#include "lib/util_autocomp.h"
+
+#include "lscss_cli.h"
+
+int main(void)
+{
+	generate_autocomp(opt_vec, "lscss");
+
+	return 0;
+}