Waypoint Manager

This mod currently adds the ability to share waypoints between worlds

• Use command /wpe [import|export]
• Export will export a json file of all your current world's waypoints
• Import will import a json file of waypoints from a previously run export command

This is my first VS Code mod. I'm a fairly experienced C# developer but new to VS modding. I made this mod because 1.17.rc6 killed my world's waypoints and I needed to retrieve them from a backup. I might expand on this mod later.