Adding method must return object rule (#8)

* Adding a scope check to the MethodSignatureMustMatchRule

* Enhance MethodSignatureMustMatchRule to conditionally check parameter types based on configuration.

Added tests for methods with and without type specifications, ensuring correct error reporting for type mismatches.

* Refactor MethodSignatureMustMatchRule to streamline parameter validation.

Introduced a new method for validating parameters, consolidating error handling for missing parameters, type mismatches, and name pattern violations. This enhances code readability and maintainability.

* Remove deprecated PHPStan rules from configuration to streamline analysis.

* Add new test methods to TestClass for various parameter types and update documentation

- Introduced `testMethodNoType` with mixed parameter types.
- Added `testMethodWithWrongType` to validate error handling for incorrect parameter types.
- Updated documentation in `MethodMustReturnTypeRule` to clarify checks performed on method signatures.

* Update README and Rules documentation to clarify  rules and add new rules

- Revised README to specify that all controllers must be `readonly` and clarified method argument limits.
- Enhanced Rules documentation with new rules for catching exceptions and naming conventions for boolean-returning methods.
- Corrected class names in configuration examples for consistency.

Author: floriankraemer