Closes #1092: Add launch configuration for debugging tests

[manekenpix]

Issue This PR Addresses

Closes #1092

Type of Change

• Bugfix: Change which fixes an issue
• New Feature: Change which adds functionality
• Documentation Update: Change which improves documentation
• UI: Change which improves UI

Description

This modifies launch.json to include test debugging. With the new settings, it's possible to choose between running and debugging one test (the one opened in the editor) or all of them (run sequentially like when running npm run test".

Note:
Running tests using VSCode debugger shows an illegal access error after completing all the tests.
More specifically:

node::inspector::Agent::ToggleAsyncHook Cannot toggle Inspector's AsyncHook, please report this.

This is a nodejs error, and according to their repo, it'll be fix in the next release this month (September 2020).
More info about this issue here.

Checklist

• Quality: This PR builds and passes our npm test and works locally
• Tests: This PR includes thorough tests or an explanation of why it does not
• Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not (if applicable)
• Documentation: This PR includes updated/added documentation to user exposed functionality or configuration variables are added/changed or an explanation of why it does not(if applicable)