feat: switch action execution to run custom code

Author: alexravenna

__tests__/index.test.ts

@@ -2,13 +2,15 @@
  * Unit tests for the action's entrypoint, src/index.ts
  */
 
-import * as main from '../src/main'
+import * as themeConverter from '../src/themeConverter'
 
 // Mock the action's entrypoint
-const runMock = jest.spyOn(main, 'run').mockImplementation()
+const runMock = jest
+  .spyOn(themeConverter, 'cloneRepository')
+  .mockImplementation()
 
-describe('index', () => {
-  it('calls run when imported', async () => {
+describe('themeConverter', () => {
+  it('calls cloneRepository when imported', async () => {
     // eslint-disable-next-line @typescript-eslint/no-require-imports
     require('../src/index')