misc: add Arduino Sketch path to Library Config

[sleepdefic1t]

Proposed changes

This PR primarily adds the Arduino Sketch/Example path to library.json.
This allows external package managers to properly list our examples.

It also corrects the platformio_example path.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improve a current implementation without adding a new feature or fixing a bug)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Build (changes that affect the build system)
• Docs (documentation only changes)
• Test (adding missing tests or fixing existing tests)
• Other... Please describe:

adds to and updates library configuration file

Checklist

• I have read the CONTRIBUTING documentation
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[ghost]

@sleepdefic1t Thanks for submitting this pull request, a maintainer will get back to you shortly!

[ghost]

@faustbrian @air1one - please review this in the next few days. Be sure to explicitly select labels so I know what's going on.

If no reviewer appears after a week, a reminder will be sent out.

[codecov-io]

Codecov Report

Merging #67 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #67   +/-   ##
=======================================
  Coverage   77.67%   77.67%           
=======================================
  Files          22       22           
  Lines         318      318           
=======================================
  Hits          247      247           
  Misses         71       71

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[ghost]

@sleepdefic1t A contributor has approved this PR. A maintainer will merge this PR shortly. If it shouldn't be merged yet, please leave a comment saying so and we'll wait.

Thank you for your contribution!