[CodeQuality] Add rector: CatchThrowableInsteadOfExceptionRector

[pboos]

This adds a rector that in try catch blocks replaces the last } catch (Exception ...) { with } catch (Throwable ...) {
Reason for this is that Exception doesn't catch all the problems like TypeError which often want to be caught in such try catch blocks.

Example:

try {
	$this->doSomething();
} catch (Exception $exception) {
	// do something
}

becomes

try {
	$this->doSomething();
} catch (Throwable $exception) {
	// do something
}

[samsonasik]

Rector is not error handler, so the rule is not expected in the core imo :)

Feel free to create your custom rule for your usecase/project.

[samsonasik]

I am closing this as Rector is not supposed to be used for error handler, but feel free to create your own custom rule for your use case.

Thank you for understanding.

[pboos]

@samsonasik As you wish 😃. Just thought it might benefit others. We already use this as a custom rector rule. So for me not a problem.

I personally thought this could benefit others as a simple way to find and replace such occurrences that can lead to problems. As also ArithmeticError is not an exception and some people accidentally use Exception instead of Throwable for a "catch all".