Add new "Arguments Forwarding" rule

[koic]

Follow rubocop/rubocop#7646.

This PR adds new "Arguments Forwarding" rule that prefers Ruby 2.7's arguments forwarding syntax.

# bad
def some_method(*args, &block)
  other_method(*args, &block)
end

# bad
def some_method(*args, **kwargs, &block)
  other_method(*args, **kwargs, &block)
end

# bad
# Please note that it can cause unexpected incompatible behavior
# because `...` forwards block also.
# https://github.com/rubocop-hq/rubocop/issues/7549
def some_method(*args)
  other_method(*args)
end

# good
def some_method(...)
  other_method(...)
end

[bbatsov]

Looks good! Thanks!