Fysetc Cheetah updates (#14800)

Marlin/src/pins/stm32/pins_FYSETC_CHEETAH_V12.h

 #undef RGB_LED_G_PIN
 #undef RGB_LED_B_PIN
 
+#define FAN1_PIN          PB0 // Fan1
+
 #if HAS_TMC220x
 
   /**

config/examples/FYSETC/Cheetah 1.2/BLTouch/Configuration.h

  * LED Type. Enable only one of the following two options.
  *
  */
-#define RGB_LED
+//#define RGB_LED
 //#define RGBW_LED
 
 #if EITHER(RGB_LED, RGBW_LED)

config/examples/FYSETC/Cheetah 1.2/base/Configuration.h

  * LED Type. Enable only one of the following two options.
  *
  */
-#define RGB_LED
+//#define RGB_LED
 //#define RGBW_LED
 
 #if EITHER(RGB_LED, RGBW_LED)

platformio.ini

   https://github.com/lincomatic/LiquidTWI2/archive/30aa480.zip
   https://github.com/ameyer/Arduino-L6470/archive/dev.zip
   https://github.com/trinamic/TMC26XStepper/archive/c1921b4.zip
-  https://github.com/mikeshub/SailfishLCD.git
-  https://github.com/mikeshub/SailfishRGB_LED.git
-  https://github.com/mikeshub/SlowSoftI2CMaster.git
+  SailfishLCD=https://github.com/mikeshub/SailfishLCD/archive/master.zip
+  SailfishRGB_LED=https://github.com/mikeshub/SailfishRGB_LED/archive/master.zip
+  SlowSoftI2CMaster=https://github.com/mikeshub/SlowSoftI2CMaster/archive/master.zip
 
 #################################
 #                               #
   U8glib-HAL=https://github.com/MarlinFirmware/U8glib-HAL/archive/dev.zip
   TMCStepper@<1.0.0
   Adafruit NeoPixel=https://github.com/p3p/Adafruit_NeoPixel/archive/master.zip
-  https://github.com/mikeshub/SailfishLCD.git
+  SailfishLCD=https://github.com/mikeshub/SailfishLCD/archive/master.zip
 
 [env:LPC1769]
 platform          = https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/master.zip
   -DDEBUG_LEVEL=0
 build_unflags = -std=gnu++11
 lib_deps      = ${common.lib_deps}
+  SoftwareSerialM=https://github.com/FYSETC/SoftwareSerialM/archive/master.zip
 lib_ignore    =
   c1921b4
   libf3c
 monitor_speed = 115200
 upload_port = /dev/ttyUSB0
 lib_deps =
-  https://github.com/me-no-dev/AsyncTCP.git
-  https://github.com/me-no-dev/ESPAsyncWebServer.git
+  AsyncTCP=https://github.com/me-no-dev/AsyncTCP/archive/master.zip
+  ESPAsyncWebServer=https://github.com/me-no-dev/ESPAsyncWebServer/archive/master.zip
 lib_ignore  =
   LiquidCrystal_I2C
   LiquidCrystal