Name Change + SMAPI 4 / SDV 1.6 Alpha release

Mod name has changed to ACPractice to make its purpose clearer.

updates .NET from .NET5 to .NET6 for SMAPI 4.0.

Tested on:

• SMAPI 4.0.0-alpha.20240213
• Stardew Valley 1.6.0 'modding alpha' build 24053