Added ESP32_RTC_EEPROM and heltec_esp32_lora_v3

[ropg]

I wrote two new libraries...

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/ropg/heltec_esp32_lora_v3:

Linting library in heltec_esp32_lora_v3
INFO: No header file found matching library name (Heltec_ESP32_LoRa_v3.h). Best practices are for primary header        
      filename to match library name.                                                                                   
      See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format            
      (Rule LS008)                                                                                                      
WARNING: library.properties name value Heltec_ESP32_LoRa_v3 is longer than the recommended length of 16 characters.
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format    
         (Rule LP010)                                                                                              

Linter results for project: 0 ERRORS, 1 WARNINGS

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Linting sketch in heltec_esp32_lora_v3/examples/battery/battery_discharge_telnet

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/ClockDemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/DrawingDemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/OTADemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/ScrollVerticalDemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/SimpleDemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display/UiDemo

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display_and_radio/LoRa_rx_tx

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/display_and_radio/spectrum_analyser

Linter results for project: no errors or warnings

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Linting sketch in heltec_esp32_lora_v3/examples/minimal_demo

Linter results for project: no errors or warnings

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Linter results for projects: 0 ERRORS, 1 WARNINGS

[github-actions]

Your submission has now been accepted! Thanks for your contribution to the Arduino Library Manager index.

The library(s) will be available for installation via Library Manager within a day's time.

You can check the logs from the Library Manager indexer for your library(s) here:
http://downloads.arduino.cc/libraries/logs/github.com/ropg/ESP32_RTC_EEPROM/
http://downloads.arduino.cc/libraries/logs/github.com/ropg/heltec_esp32_lora_v3/