MAP-18: line memory usage

[stmitt]

• reduce line vertex argument size

Summary by CodeRabbit

• New Features

  • Introduced a unified approach for encoding line styling data, ensuring more consistent and accurate visual representation of lines.
  • Added a new method for packing line style metadata, simplifying the handling of line attributes.

• Refactor

  • Streamlined the internal handling of line attributes across graphic and map components, enhancing maintainability and clarity.

These updates improve the overall consistency and efficiency of line rendering, offering a smoother and more reliable visual experience.