Lucky::Action.query_param_declarations should include the full declaration

[watzon]

It seems like currently the declarations listed in Lucky::Action.query_param_declarations don't include the full declaration signature, and instead only include the variable's name and type. I'm trying to fix lucky_swagger and the one thing I'm missing right now is the ability to show the default value for parameters.

[jwoertink]

This happens here

lucky/src/lucky/routable.cr

Line 452 in c12e50d

@@query_param_declarations << "{{ type_declaration.var }} : {{ type_declaration.type }}"

which I think is really only used

lucky/tasks/routes.cr

Lines 34 to 37 in c12e50d

	action.query_param_declarations.each do |param|
	param_row = [] of String
	param_row << " "
	param_row << " #{dim_arrow} #{param}"

outside of 3rd party usage. But since it's just a String, my guess is it should be fine to just add the default value if there is one.