Add DFRobot_VL6180X library

[wxzed]

No description provided.

[github-actions]

Arduino Lint has suggestions for possible improvements to https://github.com/DFRobot/DFRobot_VL6180X:

Linting library in DFRobot_VL6180X
WARNING: Sketch(es) found outside examples and extras folders: DFRobot_VL6180X/example/alsContinuousInterruptMode,      
         DFRobot_VL6180X/example/interleaveMode, DFRobot_VL6180X/example/pollMeasurement,                               
         DFRobot_VL6180X/example/rangeContinuousInterruptMode, DFRobot_VL6180X/example/restart. See:                    
         https://arduino.github.io/arduino-cli/latest/library-specification/#library-examples (Rule LD003)              
WARNING: Potentially misspelled examples folder name found: DFRobot_VL6180X/example. See:                               
         https://arduino.github.io/arduino-cli/latest/library-specification/#library-examples (Rule LD005)              

Linter results for project: 0 ERRORS, 2 WARNINGS

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Linting sketch in DFRobot_VL6180X/example/alsContinuousInterruptMode

Linter results for project: no errors or warnings

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Linting sketch in DFRobot_VL6180X/example/interleaveMode

Linter results for project: no errors or warnings

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Linting sketch in DFRobot_VL6180X/example/pollMeasurement

Linter results for project: no errors or warnings

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Linting sketch in DFRobot_VL6180X/example/rangeContinuousInterruptMode

Linter results for project: no errors or warnings

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Linting sketch in DFRobot_VL6180X/example/restart

Linter results for project: no errors or warnings

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

Linter results for projects: 0 ERRORS, 2 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/DFRobot/DFRobot_VL6180X/