buildroot

luvi: new package

Add package luvi version v2.3.5.

luvi extends LuaJIT with asynchronous I/O and several optional modules to run
Lua applications and build self-contained binaries.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>