Add dependency on Lucky

[matthewmcgarvey]

Related #20

LuckyFlow was meant to be like Capybara which can be used with any framework or library so it does not have a dependency on Lucky. The problem is that there are still helpful methods added that use classes provided by Lucky and Avram but because the dependency is missing we can't actually use or test those methods because they don't exist from LuckyFlow's point of view.

I believe that we should go ahead and make that dependency explicit so that we can fully exploit that connection and test it correctly.

lucky_flow/src/lucky_flow.cr

Lines 27 to 40 in 9c4ca1d

	def visit(action : Lucky::Action.class, as user : User? = nil)
	visit(action.route, as: user)
	end
	def visit(route_helper : Lucky::RouteHelper, as user : User? = nil)
	url = route_helper.url
	uri = URI.parse(url)
	if uri.query && user
	url += "&backdoor_user_id=#{user.id}"
	elsif uri.query.nil? && user
	url += "?backdoor_user_id=#{user.id}"
	end
	session.navigate_to(url)
	end

lucky_flow/src/lucky_flow.cr

Lines 113 to 120 in 9c4ca1d

	def fill_form(
	form : Avram::SaveOperation.class | Avram::Operation.class,
	**fields_and_values
	)
	fields_and_values.each do |name, value|
	fill "#{form.param_key}:#{name}", with: value
	end
	end

lucky_flow/src/lucky_flow/expectations.cr

Lines 17 to 23 in 9c4ca1d

	private def have_current_path(action : Lucky::Action.class)
	have_current_path(action.route)
	end
	private def have_current_path(route_helper : Lucky::RouteHelper)
	HaveCurrentPathExpectation.new(route_helper.path)
	end