Add lab 4 configuration

Author: ncalteen

__fixtures__/exec.ts

@@ -1,3 +1,4 @@
 import { jest } from '@jest/globals'
 
 export const exec = jest.fn()
+export const getExecOutput = jest.fn()

__tests__/github/repos.test.ts

@@ -204,6 +204,12 @@ describe('repos', () => {
     })
 
     it('Configures a Repo', async () => {
+      exec.getExecOutput.mockResolvedValue({
+        stdout: 'stdout',
+        stderr: 'stderr',
+        exitCode: 0
+      } as never)
+
       await repos.configure(
         {
           action: AllowedIssueAction.CREATE,