[FEATURE] Feature request - Deferred interrupt handler

[bSchnepp]

Issue Checklist

• A related or similar issue is not already marked as open
• Another issue describing a similar feature has not already been marked as wontfix or closed
• This feature is not already present in the software

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Feature Description
A mechanism should be in place to handle "heavyweight" interrupt tasks without keeping the system waiting for it.

Feature Benefits
List the reasons why this feature would be beneficial

• ISRs can be kept small, and aim for minimizing time spent as much as possible
• Allows for heavier interrupt processing, such as keyboard events

Use case examples
List examples where this feature could be useful for end users.

• Processing data from I2C or GPIO pins can avoid conflicting with network events, pcie, etc. as often
• System gains more responsiveness, as upper bound on ISRs is lowered

Additional information
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