Login and Logout handler

[zg009]

New feature description

Addresses #422
The simplest approach was to add an entirely new EVENTS const which is simply emitted at all locations along with the login and logout existing events. I was unable to run the E2E tests, I figure it was due to the confusion on provisioning the pod base uri. I added unit tests which passed under Jest, and conformed to the existing test structure. The commit messages could be improved upon. I can create a new fork if needed.

Checklist

• [?] All acceptance criteria are met.
• Relevant documentation, if any, has been written/updated.
• The changelog has been updated, if applicable.
• New functions/types have been exported in index.ts, if applicable.
• Commits in this PR are minimal and have descriptive commit messages.

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[NSeydoux]

Hi @zg009, and thanks so much for contributing! Do not worry about the end-to-end tests: once the code is in a stable state, I'll rebase your commits from your fork to a branch on the main repository, which will run all the tests. I added a couple of comments on the PR, and you can also add a changelog entry if you wish, otherwise I'll add it when rebasing. In any case, you'll be credited as a contributor to the code in the commit history, and I'll mention you in the changelog entry :)

[zg009]

I do not know how to add a changelog entry, sorry. I am also unsure what configs are conflicting in the e2e-test file