Add support for Xedge, an embedded software toolkit for IoT applications
using Lua scripting with HTTP(S), WebSockets, MQTT, and device I/O.
* netutils/xedge: Dependency manager that downloads BAS library
and BAS-Resources, generates XedgeZip.c during build
* examples/xedge_demo: Complete example showing Xedge integration
with HTTP server, Lua runtime, and SNTP time synchronization
Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>