On some builders the package was failing to build:
```
cp: cannot overwrite non-directory '[..]/var' with directory '[..]/var
```
Here we're moving the creation of /var/lib/thread into runtime script,
which eliminates the error.
Signed-off-by: krant <aleksey.vasilenko@gmail.com>
Add a new package for the OpenThread Border Router. Comes with a netifd
protocol handler. See README.md for more information.
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>