Adding the ability to set the player's color outline via the scripting API

(currently not shared with the other players yet)

front/src/Stores/OutlineColorStore.ts

@@ -0,0 +1,40 @@
+import { writable } from "svelte/store";
+
+export function createColorStore() {
+    const { subscribe, set } = writable<number | undefined>(undefined);
+
+    let color: number | undefined = undefined;
+    let focused: boolean = false;
+
+    const updateColor = () => {
+        if (focused) {
+            set(0xffff00);
+        } else {
+            set(color);
+        }
+    };
+
+    return {
+        subscribe,
+
+        pointerOver() {
+            focused = true;
+            updateColor();
+        },
+
+        pointerOut() {
+            focused = false;
+            updateColor();
+        },
+
+        setColor(newColor: number) {
+            color = newColor;
+            updateColor();
+        },
+
+        removeColor() {
+            color = undefined;
+            updateColor();
+        },
+    };
+}