Update repositories.txt

[ferdinand0815]

Add MVP3000 to Arduino library manager.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/Production3000/mvp3000esp:

Linting library in mvp3000esp
INFO: No header file found matching library name (MVP3000esp.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 depends field item(s) ESP AsyncTCP not found in the Library Manager index.         
         See: https://arduino.github.io/arduino-cli/latest/library-specification/#libraryproperties-file-format
         (Rule LP048)                                                                                          

Linter results for project: 0 ERRORS, 1 WARNINGS

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Linting sketch in mvp3000esp/examples/led/effect

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/led/ondemand

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/mvp/basic

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/mvp/custom_module

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/mvp/landing_page

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/bme680

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/hx711

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/magnitude

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/matrix

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/noise

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/pulse

Linter results for project: no errors or warnings

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Linting sketch in mvp3000esp/examples/sensor/sdc30

Linter results for project: no errors or warnings

-------------------

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/Production3000/mvp3000esp/