Renaming generated "src" directory as "tests"

[mapolonio]

Problem

When running the nx-playwright generator all the test files end up inside the src directory while the accessibility tests get generated in axe-tests.

For consistency it would make more sense to have a tests directory for E2E alongside the axe-tests directory.

Solution

Generator updated so all E2E test files are now created inside tests/.

Useful documentation

• Contributing guidelines