Improve posting of managed events

[josesimoes]

Description

Motivation and Context

• Improves performance by only posting event if there are subscribers
• Not possible for UART though as ChibiOS is missing args in UART callback (see here).

How Has This Been Tested?

Screenshots

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Signed-off-by: José Simões [email protected]

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Thank you for your contribution!

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