Create Settings class.

src/models/Settings.ts

@@ -0,0 +1,19 @@
+export class Settings {
+    static #instance: Settings;
+
+    minValue: number;
+    maxDistance: number;
+
+    private constructor() {
+        this.minValue = 500000;
+        this.maxDistance = 10000;
+    }
+
+    static get(): Settings {
+        if (!Settings.#instance) {
+            Settings.#instance = new Settings();
+        }
+
+        return Settings.#instance;
+    }
+}