feature: remove @return void from magic methods

[parijke]

This PR removed the dead code from magic methods.

[samsonasik]

The rule purpose is only remove @return tag when there is native return type.

For removing @return tag when there is no native type, that should be in separate rule so the functionality is isolated, and easy to exclude/skip when needed.

[parijke]

Can you help me a little then where / how it should be done? This is my forst contributing attempt

[parijke]

Can you help me a little then where / how it should be done? This is my forst contributing attempt

@samsonasik @TomasVotruba

[samsonasik]

Add another rule under rules/DeadCode/Rector/ClasaMethod, add test under rules-tests/DeadCode/Rector/ClassMethod as well