The municipality and the county are hereby each respectively authorized to appropriate and pay over to or for the use of the corporation such sums as they consider desirable either to provide funds to pay for preliminary surveys, engineering and architectural studies to determine the feasibility of a project and reports of such studies or to pay all or any part of the cost of any project. Neither the municipality nor the county shall be obligated to make any such appropriation nor shall they do so in such manner as to constitute the revenue bonds of the corporation an indebtedness of the municipality or the county within the meaning of Section 224 or 225 of the constitution of the state or bonds within the meaning of Section 222 thereof.