Feature/schiltz3/testing (#92)

# Add basic jest testing to the project with examples

Added the jest testing framework and config file to facilitate testing
code.
Added an example of a some string tests

# Changes
* Added the jest, ts-jest, and jest/globals (types) packages to the
project
* Added jest config 
* Added example tests
* Add test command to package.json

## Note:
Using ChatGPT to write a bunch of the tests

Author: schiltz3

__tests__/utils/channels.tests.ts

@@ -0,0 +1,33 @@
+import { cleanChannelString } from "../../utils/channels";
+import { test, expect, describe, it } from "@jest/globals";
+
+//cleanChannelString
+
+describe("cleanChannelString", () => {
+  it("should lowercase the string", () => {
+    expect(cleanChannelString("ABCD")).toEqual("abcd");
+  });
+
+  it("should remove special characters", () => {
+    expect(cleanChannelString("a!b@c#d$")).toEqual("abcd");
+  });
+
+  it('should replace "compsci " with "cs"', () => {
+    expect(cleanChannelString("compsci")).toEqual("cs");
+  });
+
+  it("should replace spaces and parentheses with hyphens", () => {
+    expect(cleanChannelString("a b (c)")).toEqual("a-b-c");
+  });
+  it("should return an empty string for an empty input", () => {
+    expect(cleanChannelString("")).toBe("");
+  });
+
+  it("cleanChannelString should return an empty string for a string with only special characters", () => {
+    expect(cleanChannelString("!@#$%^&*")).toBe("");
+  });
+
+  it("should handle a mix of all transformations", () => {
+    expect(cleanChannelString("Compsci 123!")).toEqual("cs-123");
+  });
+});

jest.config.js

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};