Feature/temp hp

[kamejosh]

Summary

• Rework Scene display of HP and AC
  • AC is not displayed above it's own shape
  • bot AC and HP Shapes and Text scale with token size
• Improve update logic for more performance
• Add Temporary Hitpoint Feature
  • Adding Temp HP automatically adds HP
  • losing HP automatically reduces Temp HP
  • Blue Bar to indicate that someone has temporary hitpoints.

[render[bot]]

Your Render PR Server URL is https://hp-tracker-pr-30.onrender.com.

Follow its progress at https://dashboard.render.com/static/srv-clpftg1jvg7s73esdqv0.