Update project documentation and improve frontend functionality

- Updated the backend documentation in CONTRIBUTING.md and README.md to reflect changes in application structure and API endpoints.
- Enhanced the frontend components in MapView.vue for better handling of context menu actions.
- Added new types and interfaces in TypeScript for improved type safety in the frontend.
- Introduced new utility classes for managing characters and markers in the map.
- Updated .gitignore to include .vscode directory for better development environment management.

internal/app/admin_markers.go

@@ -0,0 +1,48 @@
+package app
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+
+	"go.etcd.io/bbolt"
+)
+
+func (a *App) hideMarker(rw http.ResponseWriter, req *http.Request) {
+	if a.requireAdmin(rw, req) == nil {
+		return
+	}
+
+	err := a.db.Update(func(tx *bbolt.Tx) error {
+		mb, err := tx.CreateBucketIfNotExists([]byte("markers"))
+		if err != nil {
+			return err
+		}
+		grid, err := mb.CreateBucketIfNotExists([]byte("grid"))
+		if err != nil {
+			return err
+		}
+		idB, err := mb.CreateBucketIfNotExists([]byte("id"))
+		if err != nil {
+			return err
+		}
+		key := idB.Get([]byte(req.FormValue("id")))
+		if key == nil {
+			return fmt.Errorf("Could not find key %s", req.FormValue("id"))
+		}
+		raw := grid.Get(key)
+		if raw == nil {
+			return fmt.Errorf("Could not find key %s", string(key))
+		}
+		m := Marker{}
+		json.Unmarshal(raw, &m)
+		m.Hidden = true
+		raw, _ = json.Marshal(m)
+		grid.Put(key, raw)
+		return nil
+	})
+	if err != nil {
+		log.Println(err)
+	}
+}