add fife & fifechan live ebuilds

As conversation at:
https://bugs.gentoo.org/show_bug.cgi?id=310155
we should move this while construct to src_compile and do:
```
local myesconsargs=(
    $(usex debug "--enable-debug" "")
    $(usex profile "--enable-profile "")
    [...]
)
escons --python-prefix="${D}"$(python_get_sitedir) --prefix="${D}"/usr
```