Generally revise minor in possession laws

This bill creates separate criminal offenses for minors possessing or attempting to purchase alcohol, marijuana, or other intoxicating substances in Montana. It directly affects individuals under 21 years of age and establishes specific penalties based on age and offense frequency, including fines, community service hours, mandatory substance abuse education courses, and driver's license suspensions. The legislation distinguishes between younger offenders under 18 and those aged 18 to 20, with stricter penalties for repeat offenses, and includes provisions for transferring cases to youth court when minors fail to comply with sentencing requirements.