Generally revise laws related to presentence investigations

This bill updates Montana laws governing presentence investigations and reports used in criminal sentencing. It primarily affects judges, prosecutors, defense attorneys, and probation officers by clarifying when these investigations must be ordered and how plea agreements are handled. Key changes include allowing plea discussions via two-way electronic audio-video communication, requiring courts to order mental health evaluations when defendants claim mental illness affected their behavior, and setting a 30-day deadline for completing preliminary or final investigation reports after a guilty plea or verdict. The legislation also defines specific circumstances under which presentence investigations are required for felony convictions.