Classlib generator should be able to work from any path

The classlib generator only works at the src directory.

```sh
src/src-test-tester.ts: SyntaxError: '{' expected. (1:14)
> 1 | export class .\src\test\tester {
| ^
2 | private greeting: string;
3 |
4 | constructor(message: string) {
test/greeter-tests.ts 8ms
test/index-tests.ts 5ms
test/logger-tests.ts 2ms
test/src-test-tester-tests.ts
test/src-test-tester-tests.ts: SyntaxError: Identifier expected. (1:10)
> 1 | import { .\src\test\tester } from '../src/src-test-tester';
| ^
2 | import * as chai from 'chai';
3 |
4 | const expect = chai.expect;
error Command failed with exit code 2.
error Command failed with exit code 1.
```

You should be able to run the classlib generator from any path and have it generate valid import statements