combainApiKey modifiable via dhub dynamically, set dhub json string format same for gnss & wifi, i.e.zero for alt & vacc, finally auto-start location

Added dhub config of combain api key if not set from config, default periodic sensor for location to enabled & 30 sec., got rid of exits, tried adding wlan caching (revisit)

The bug that was referenced has been fixed and and a new error flag
definition was created, so use that.

ws_eink: clean up resource by free memory and cleanup deferred io

Using vfree instead of kfree because we using vzalloc to allocate memory
and aff cleanup deferred io

Add locationService to use GPS if available & accurate, otherwise use wifi with Combain service to get location

Update in the background instead of on demand to prevent blocking for
long periods of time.

Add bitrev8 to ws_eink_display for issue mirror with littlevgl graphic lib.

Fix a problem where the OpenWeatherMap ambient temperature service would
try to advertise the service each time a data connection was
established. This caused a crash the second time the connection was
established.

Remove the bme680 kernel driver initialization code from the mangOH
yellow module because the Bosch userspace driver is now being used
instead.

Use "full update" rather than "partial update" LUT every 10th update to
the display to help prevent "ghosting" display artifacts from
accumulating.

The BSEC temperature offset and ambient temperature required by the
bme680 driver library are now supplied dynamically. Additionally, an
openweathermap.org based ambient temperature API was added. This is of
course only useful if the device will be outdoors.

Add callinng init in ws_eink_display and sleep after displaying