meta: add build system and stub tool source code

ropam/vendor/vendor.c

@@ -0,0 +1,13 @@
+#include "../commands.h"
+
+#include <blue/cmd.h>
+
+B_COMMAND(CMD_VENDOR, CMD_ROOT)
+{
+	B_COMMAND_NAME("vendor");
+	B_COMMAND_SHORT_NAME('V');
+	B_COMMAND_DESC("package vendor management commands.");
+	B_COMMAND_FLAGS(B_COMMAND_SHOW_HELP_BY_DEFAULT);
+
+	B_COMMAND_HELP_OPTION();
+}