Hi-Res Images, Workflow Improvements

New Features

• Hi-Res Image Support - up to 2K (2048 x 2048) - c/o and thanks to 3dn-bip!
• Select Images with larger previews
• Select Image Folder to auto populate previews
• Node Color button has a Material Icon next to it
• Drawer button is larger (can still be hidden in Addon Preferences)

Changes

• Blender image preview collection and 3dn_bip image preview generation now in use
• Image selection menu replaced by enum preview
• Mindmap default node color changed
• Node default image and image folder ship with addon

Future

• AI Texture Generation integration still planned
• further streamline the workflow: ideally you wouldn't need a hidden control panel, and you could simply click directly on the label, image etc to edit it. Time will tell how much I can change this.