PHPStan - Discourage apply_filters in Favor of wpm_apply_filters_typed()

[Miraeld]

Add a PHPStan rule to detect the use of apply_filters and prompt developers to use wpm_apply_filters_typed() instead.

Justification:
Code Quality: Encourages the use of typed filters, improving type safety and reducing potential errors.
Consistency: Promotes a consistent approach to applying filters across the codebase.

Example:
The following will prompt an error:

$result = apply_filters('filter_name', $value);

In favor of:

$result = wpm_apply_filters_typed('filter_name', $value);

This rule will help ensure that all filters in the WP Rocket codebase are applied using the more robust and type-safe wpm_apply_filters_typed() function