Add multiselect embeded popover

[kamejosh]

1.5.2

• Add multi-selection embedded context-menu
  • damage and heal function for multiple selected tokens
  • toggle settings for multiple selected tokens

[render[bot]]

Your Render PR Server URL is https://hp-tracker-pr-34.onrender.com.

Follow its progress at https://dashboard.render.com/static/srv-cmk0kcnqd2ns738bm84g.