Adding GH Action Scripts to allow issue integration with Zendesk

[johnkiely1]

Adds scripts to allow Zendesk tickets be raised based on GH issues creation/comments/status changes as well as updating the GH issues with comments when added to the related Zendesk tickets.

[github-actions[bot]]

@bugsnag/browser bundle size diff

	Minified	Minfied + Gzipped
Before	43.43 kB	13.34 kB
After	43.43 kB	13.34 kB
±	No change	No change

code coverage diff

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