* feat: add line height attribute to text element
* lint
* update line height when redrawing text bounding box
* fix tests
* retain line height when pasting styles
* fix test
* create a util for calculating ling height using old algo
* update line height when resizing multiple text elements
* make line height backward compatible
* udpate line height for older element when font size updated
* remove logs
* Add specs
* lint
* review fixes
* simplify by changing `lineHeight` from px to unitless
* make param non-optional
* update comment
* fix: jumping text due to font size being calculated incorrectly
* update line height when font family is updated
* lint
* Add spec
* more specs
* rename to getDefaultLineHeight
* fix getting lineHeight for potentially undefined fontFamily
* reduce duplication
* fix fallback
* refactor and comment tweaks
* fix
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Co-authored-by: dwelle <luzar.david@gmail.com>