Adds CommandOverrideProcessor to validate CommandOverride usage at compile time

[abrackx]

Impact

• Bug fix (non-breaking change which fixes expected existing functionality)
• Enhancement/New feature (adds functionality without impacting existing logic)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Adds new annotation processor to detect invalid usage of the @CommandOverride annotation.
TODO:

• Do not print multiple messages, this means the annotation processor is running more than once
• Re-use code, this is currently duplicating the validation found in CommandFactory.
• Validate that the new service file is actually needed
• Get this to build in the pipeline

Things to be aware of

This will (intentionally) break builds.

Things to worry about

This can impact lombok. I don't think it does in its current form, but it can.

Additional Context