function_parameter_count rule should not apply to overridden methods / protocol implementations

[frenetisch-applaudierend]

When overriding a method, or implementing one from a protocol, I don't have any control over the number of parameters. Therefore I feel this rule should not report in those cases. Instead it should (and presumably does) report at the base class / protocol definition.

[marcelofabri]

Checking if it's an overridden method should be easy, but we can't check if a method is implemented from a protocol without major changes on how SwiftLint works (see #836 (comment)).

[marcelofabri]

Do you want to try making a PR to check if it's an overridden method? 💯

[frenetisch-applaudierend]

Love to! I'll take a stab at it over the weekend 👍