Starting GUI render refactor to be more immediate mode

Update TemperatureAdjust.cpp

.

Cleanup Soldering

Sleep

SolderingProfiles

Soldering Rework

Rough pass GUI

Temp Adjust

Cleanup old OperatingMode

Debug Menu

source/Core/Threads/GUIRendering.md

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+# GUI Rendering
+
+The GUI aims to be somewhat similar to immediate mode rendering, where the screen is re-rendered each sweep.
+This is due to a few aims:
+
+1. Functions should try and contain their state to the context struct (helps keep state usage flatter)
+2. Allows external events to change the state
+3. Means state can be read/write over BLE or other external control interfaces
+
+## TODO notes
+
+On settings menu exit:
+
+```
+      OLED::useSecondaryFramebuffer(true);
+      showExitMenuTransition = true;
+
+```