feat: Add position precision indicator to map

[jamesarich]

This commit adds a visual indicator to the map that shows the precision of a node's position. The indicator is a circle around the node's marker, and the size of the circle corresponds to the precision of the position.

The precision is determined by the precisionBits field in the node's position data. The higher the precisionBits value, the more precise the position.

This feature helps users to understand the accuracy of the position data displayed on the map.

This should follow closely with @garthvh 's work on Apple here: https://github.com/meshtastic/Meshtastic-Apple/blob/3fc03b721130f3e295a43ccb06395a466faa464e/Meshtastic/Views/Nodes/Helpers/Map/MapContent/MeshMapContent.swift#L134

closes #893

[prokrypt]

https://github.com/user-attachments/assets/2dcf04da-e312-4a4a-a05e-658c3b1fc048

also, sometimes the circles are drawn over the node markers and eating taps 🫠

[jamesarich]

screen-20240815-112648.mp4 also, sometimes the circles are drawn over the node markers and eating taps 🫠

1190 is a rework - should help :crossed_fingers: