Gate_SerialCom ESP32 project example

[Salem-Tho]

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PR Description section

Description and dependencies

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Changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
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Related issue(s)

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Developer section

• [Documentation] is up to date with new feature
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• [Code Quality] please check if:
  • Each function has a header (description, inputs, outputs)
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QA section

• [Review] tests for new features have been reviewed
• [Changelog] is up-to-date with expected tags
  🆕 Feature: [Feature] Description...
  🆕 Added: [Feature] Description...
  🆕 Changed: [Feature] Description...
  🛠️ Fix: [Feature] Description...

[JeromeGalan]

OK !
I'll just add "$PROJECT_DIR" missing in platformio.ini