Deprecate the void (shared_ptr<MessageT>) subscription callback signatures

[wjwwood]

We decided we wanted to do this (see discussion here: #1598 (comment)), but decided against doing it so close to the Galactic API freeze.

These are signatures in question:

rclcpp/rclcpp/include/rclcpp/any_subscription_callback.hpp

Lines 192 to 214 in 1037822

	/// Function for shared_ptr to non-const MessageT, which is deprecated.
	// TODO(wjwwood): enable this deprecation after Galactic
	// [[deprecated(
	// "use 'void (std::shared_ptr<const MessageT>)' instead"
	// )]]
	void
	set_deprecated(std::function<void(std::shared_ptr<MessageT>)> callback)
	// set(CallbackT callback)
	{
	callback_variant_ = callback;
	}
	/// Function for shared_ptr to non-const MessageT with MessageInfo, which is deprecated.
	// TODO(wjwwood): enable this deprecation after Galactic
	// [[deprecated(
	// "use 'void (std::shared_ptr<const MessageT>, const rclcpp::MessageInfo &)' instead"
	// )]]
	void
	set_deprecated(
	std::function<void(std::shared_ptr<MessageT>, const rclcpp::MessageInfo &)> callback)
	{
	callback_variant_ = callback;
	}

[aprotyas]

@wjwwood I can do this quick patch if that's fine.

[aprotyas]

Closing this issue following the merge of #1713.