Medicaid Oversight; Establishes Joint Legislative Committee on Medicaid Oversight within Office of Auditor; specifies duties; requires Auditor General & AHCA to enter into data sharing agreement; requires Auditor General to assist committee; provides that committee must be given access to certain records, papers, & documents; authorizes committee to compel testimony & evidence; provides that certain joint rules of Legislature apply to committee; requires agency to provide report of specified information to committee.