Fix: Lillygo Tbeam 1W Fan Control and LNA Sequencing improvements

[Robowarrior834]

Ensures proper sequencing of the LNA and amp for the TBEAM 1W. Also adds fan control to keep the fan on for 10 seconds.

[Robowarrior834]

Had to rebuild the repository as I accidently added other local changes I made on my machine to the old pull request

[ripplebiz]

Is probably time to introduce a new virtual MainBoard::loop(), and a no-op as default.
And have the TBeam1WBoard class override, and put the updateFan() logic there

[ripplebiz]

ie. here make this the board's loop() method

[Robowarrior834]

So I did this. Would I also need to add a loop function to every variant?

[Robowarrior834]

I answered my own question. Added a new virtual loop to the mainboard class so other variants compile and adjusted the tbeam 1w to override.

[Robowarrior834]

@ripplebiz

[r0ck40k]

I basically did the same. Which seems to improve reliability on this board a lot. While changing this i wanted to ask if it makes sense to allow adjusting the PA ramp time dynamically?
I read the Lilygo documentation and for this board they prefer >= 800us for PA ramp time.

Maybe it makes sense to add something like:

1. The build flag (definition) — variants/lilygo_tbeam_1w/platformio.ini
   -D SX126X_PA_RAMP=0x05

2. Initial application at radio init — variants/lilygo_tbeam_1w/target.cpp
   radio.setTxParams(LORA_TX_POWER, SX126X_PA_RAMP);

3. Re-application after every TX power change — src/helpers/radiolib/CustomSX1262Wrapper
   void setTxPower(int8_t dbm) override {
   ((CustomSX1262 *)_radio)->setOutputPower(dbm);
   #ifdef SX126X_PA_RAMP
   ((CustomSX1262 *)_radio)->setPaRampTime(SX126X_PA_RAMP);
   #endif
   }

This is at least my understanding. Please correct me if i am wrong.

[Robowarrior834]

to out of date to try and merge