feat(ant-colony): add ant colony optimization demo for tsp

Ant System on the travelling salesman problem, run on the CPU.
Click the canvas to add cities while the colony runs.
Show the nearest-neighbor tour as a baseline. Tick ROADMAP.

src/app/constants/RouterConstants.ts

@@ -70,6 +70,11 @@
     LINK: '/algorithms/gray-scott',
   };
 
+  static readonly ANT_COLONY = {
+    PATH: 'algorithms/ant-colony',
+    LINK: '/algorithms/ant-colony',
+  };
+
   static readonly FOUR_COLOR = {
     PATH: 'algorithms/four_color',
     LINK: '/algorithms/four_color',