Implemented M Coloring Problem (#1562)

* Implemented M Coloring Problem

* Implemented M Coloring Problem

* Switch to a functional approach instead of class-based.
Use proper JSDoc comments.
Refine the comments and remove redundancies.

* Updated Documentation in README.md

* Proper JSDoc comment

---------

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Lars Müller <34514239+appgurueu@users.noreply.github.com>

Backtracking/tests/MColoringProblem.test.js

@@ -0,0 +1,23 @@
+import { mColoring } from '../MColoringProblem';
+
+describe('MColoringProblem', () => {
+  it('should color a triangle with 3 colors', () => {
+    const graph = [
+      [0, 1, 1],
+      [1, 0, 1],
+      [1, 1, 0]
+    ];
+    const solution = mColoring(graph, 3);
+    expect(solution).not.toBeNull();
+  });
+
+  it('should not color a triangle with 2 colors', () => {
+    const graph = [
+      [0, 1, 1],
+      [1, 0, 1],
+      [1, 1, 0]
+    ];
+    const solution = mColoring(graph, 2);
+    expect(solution).toBeNull();
+  });
+});