[Task] Add pre-release testing validation with external projects

[nev21]

Update the release-test process to perform additional pre-release testing / validation to ensure that bugs like #398 don't occur again.

These tests should ideally be performed on every commit to more easily identify any breaking changes, and depending on the time required to perform these tests potentially enhance the CI build pipeline.

[nev21]

This should ensure that any necessary external projects are validated using additional repos like the release-tests to manage and identify any external projects that require validation.

[nev21]

Additional simple tests should also include validating that all of the links on the readme to the typedoc definitions are valid, as the typedoc is automatically deployed after main checkin, this portion will need to be a post-checkin / typedoc check. But this (should) have caught the dropped exports as it starts from the index.ts.

This would also catch issues like typedoc updates that "move" the location of where some items are generated (like the change required to tag the aliases with @function so they still appeared in the functions folder -- investigate and maybe split this out into it's own task.