* New YANG generated auto-cli feature with syntax modes

* The existing autocli does not support modes, complete paths must be given, eg: `set a b c d 42`.
  * In the new auto-cli, automatic modes are present at each YANG syntax node level, eg the above can be given as: `edit a b c; set d 4; top`
  * The existing CLI API remains, the new API is as follows: `cli_auto_edit()`, `cli_auto_up()`, `cli_auto_top()`, `cli_auto_show()`, `cli_auto_set()`, `cli_auto_merge()`, `cli_auto_create()`, `cli_auto_del()`.
  * See `test/test_cli_auto.sh` for an example of the new API, and `apps/cli/cli_auto.c` for the source code of the new callback API.
  * Documentation will be appear and full integration with the main example.
* Added inline state field to clixon-example.yang
* Added new clicon_data_cvec_*() API for generic cvec structs

apps/cli/Makefile.in

@@ -82,6 +82,7 @@ LIBSRC	        = cli_common.c
 LIBSRC	       += cli_show.c
 LIBSRC	       += cli_handle.c
 LIBSRC	       += cli_plugin.c
+LIBSRC	       += cli_auto.c
 LIBOBJ		= $(LIBSRC:.c=.o)
 
 # Name of lib