* setup popover component template and basic story
* add a11y features
* add multiple positions for the popover
* add stories for open right and left
* prevent panel from hugging edges of screen
* fix typo
* add popover arrow depending on position
* add buttons to stories
* add figma preview
* move toward directive approach
* add all positions
* add header input
* add close functionality
* make standalone component
* add a11y import
* add all stories
* add story controls/args
* add module of standalone components
* gracefully handle text wrap and align close button to top for longer headings
* update semantic html
* add story for open state
* use bitIconButton
* adjust styles
* add public close method
* setup walkthrough mode
* add walkthrough mode
* revert to before walkthrough service added
* add triggerRef to stories
* change property name
* add Escape key to close events
* add initially open state
* add docs
* minor reformatting
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Co-authored-by: William Martin <contact@willmartian.com>
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