Professional Services Contracts; Providing that a professional services contract between a design professional and a contracting party, rather than between a design professional and a public agency, may require the design professional to indemnify and hold harmless the contracting party, and its officers and employees, only against certain liability and damages; specifying that a professional services contract must require a design professional to perform to a certain level of professional skill and care; prohibiting a professional services contract from subjecting a design professional to a different standard of care, etc.