[Feature Request]: Add waypoints

[philon-]

Prerequisites

• [x] I have searched existing issues to ensure this feature hasn't already been requested
• [x] I have checked the documentation to verify this feature doesn't already exist

Problem Statement

Currently, waypoints sent over the mesh by other nodes are displayed during the current session, but there is no way to send new ones using the web client.

Proposed Solution

Add UI elements to map view to drop waypoints (by clicking on the map), and setting possible parameters.

Bonus if waypoints are persistent until expiry, if user refreshes page).

Current Alternatives

None in the web client

Importance

Nice to have

Additional Context

See other clients for usage examples.

iOS: