add M5StamPLC Library

[Gitshaoxiang]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/m5stack/M5StamPLC:

Linting library in M5StamPLC
WARNING: library.properties includes field item(s) src, src/utils not found in library.                        
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format
         (Rule LP052)                                                                                          

Linter results for project: 0 ERRORS, 1 WARNINGS

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Linting sketch in M5StamPLC/examples/Advanced/DashboardUI

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Button

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Buzzer

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/CAN

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Display

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Inputs

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Modbus

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/Relay

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/RtcAndSensors

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/SD

Linter results for project: no errors or warnings

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Linting sketch in M5StamPLC/examples/Basic/StatusLight

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/m5stack/M5StamPLC/