RTC: PCF85063 support, port to SensorLib 0.3.1 (#8061)

* RTC: PCF85063 support, port to SensorLib 0.3.1

* Tidy up defines

* Remove RTC/PCF8563 mentions from unrelated variants

* Bump SensorLib 0.3.2

* Use SensorRtcHelper

* Consistent warning message

* Fix oversight

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Manuel <71137295+mverch67@users.noreply.github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

variants/nrf52840/heltec_mesh_node_t114/platformio.ini

@@ -13,7 +13,5 @@ build_flags = ${nrf52840_base.build_flags}
 build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/heltec_mesh_node_t114>
 lib_deps = 
   ${nrf52840_base.lib_deps}
-  # renovate: datasource=custom.pio depName=PCF8563 packageName=lewisxhe/library/PCF8563_Library
-  lewisxhe/PCF8563_Library@1.0.1
   # renovate: datasource=git-refs depName=meshtastic-st7789 packageName=https://github.com/meshtastic/st7789 gitBranch=main
   https://github.com/meshtastic/st7789/archive/bd33ea58ddfe4a5e4a66d53300ccbd38d66ac21f.zip

variants/nrf52840/heltec_mesh_node_t114/variant.h

@@ -175,9 +175,6 @@ No longer populated on PCB
 #define PIN_SERIAL1_RX GPS_RX_PIN
 #define PIN_SERIAL1_TX GPS_TX_PIN
 
-// PCF8563 RTC Module
-#define PCF8563_RTC 0x51
-
 /*
  * SPI Interfaces
  */