Agent Hooks Support

[calebdw]

Hello!

Please see the following for reference: driftingly/rector-laravel#461

Running rector after making modifications is a perfect example for an agent hook, the same thing could be said for pint, phpstan, or other tools.

Thanks!

CC @peterfox

[leek]

Please make this optional if implemented. When the agent makes multiple edits to the same file, autoformatters like rector/pint can interfere in-between edits. For example, agent adds an use Class to the top of the file in one instruction before utilizing the class later in the same file. In this case, Pint would run after the first instruction and remove the "unused" import.