Add ability to position watermark relative to watermarked content. (#12004)
* feature to allow user to position the watermark added to the image.
* fix: update watermark parameter validation to accept multiple types
* add changeset
* fix: enhance watermark positioning. Added 'top-left', 'top-right', 'bottom-left', 'bottom-right' literals.
* fix
* fix
* fix: updated ts file to match with pyton dataclass
* Lint
* Fix
* Fix test
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Co-authored-by: Freddy Boulton <41651716+freddyaboulton@users.noreply.github.com>