support linear gradient line
support color step shortcut, improvement performance
support background image ui
Refactoring UI
Improvement performance
support pretendard font
add createComponent function
redesign inspired by figma
support toolbar menu
update auto layout algorithm, support jest
refactoring..., implement copy and paste
* change build system to vite
support json based editor
Merge pull request from easylogic/feat/path-manipulate
improvement path editor
improvement path boolean operation
fixed to initialize element caching
fixed path editing when enter key is pressed
Improvement multi path editor
Support polygon, start item model
Improvement path editor
Modify path selection
Support Polygon, Star
Support Boolean Operation
Support smooth, stroke to path, flatten
