vte: move shell auto scripts into seperate package

vte: move shell auto scripts into seperate package

It bugged me for a while that xfce4-terminal sets (tab-)title to 'Untitled'.
This is caused by bash variable PROMPT_COMMAND not set. vte ships /etc/profile.d/vte.sh
adding PROMPT_COMMAND and a function to handle.

Since

* not all consumers of 'libvte' are interested in this feature
* executable shipped by package 'vte' is not necessary for PROMPT_COMMAND support

create a seperate package.
Once applied patches for xfce4-terminal and gnome-terminal will be send.

(From OE-Core rev: c0bed1aa9549568a966d34d5a9e5902190f980cb)

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>