* add multi arc mockup
* implement mutli arc
* add join and smooth option
* reset multiarc and arc when deactivated
* create self loop if the last point is the same as the first
* make join option in multiarc consistent with tape tool
* fix a bug where thickness don't affect mutliarc in vector level
* remove join option in geometric tool
* stop mutliarc after closing shape
* double click can also end multi arc
* fix a bug where multiArc will produce buggy stroke
* fix a bug where geometric tools is not deactivated
* add multiArc shortcut
* rewrite multiArc
* revert changes to tvectorimage
* add undo data for multiArc
* prevent guide lines from jumping around in MultiArc
* make stroke color consistent in MultiArc
* remove color in MultiArc's undo data
* make color consistent in MultiArc with previous version
* fix compilation error
* fix a bug where multiArc might generate bugged stroke
* Remove ICONV dep (#3304)
* fix crash on saving studio palette
* Don't Set Fixed Width if Docking a Floating Panel
* fix geometric tool multiarc smooth option
Co-authored-by: pojienie <pojienie@gmail.com>
Co-authored-by: rim <11380091+rozhuk-im@users.noreply.github.com>
Co-authored-by: shun-iwasawa <shun.iwasawa@ghibli.jp>
Co-authored-by: Rodney <rodney.baker@gmail.com>
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