feat(ui-new): Tools > Satellites -- sky plot and signal bars on the 128x64 OLED

Two views, swapped with left / right: a polar sky plot (filled = used in the
fix, hollow = tracked, a pixel = no signal) beside fix, used / in view, HDOP,
PDOP and time to first fix; and a signal bar per satellite (used first, a
dotted 30 dB-Hz line) under per-constellation counts. The GPS stays awake
while it's open. Data from GpsSky (-D GPS_SKYVIEW, now on the L1 solo build).
The simulator's made-up sky moves from the L2's GpsScreen into
helpers/sensors/GpsSkySim.h, so both sims show it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

solo/wio-tracker-l1/platformio.ini

@@ -15,5 +15,6 @@ build_flags = ${WioTrackerL1CompanionDual.build_flags}
   -D UI_HAS_JOYSTICK_UPDOWN=1
   -D ENABLE_SCREENSHOT
   -D DUAL_SERIAL=1
+  -D GPS_SKYVIEW   ; Tools > Satellites (helpers/sensors/GpsSky.h)
   -Os
 extra_scripts = post:create-uf2.py