add gradient panel & fix zIndex (premieroctet#117)

* add gradient panel & fix zIndex

* fix

* fix & add external component

* add ColorPicker component

* fix

* fix

* fix gradient

* fix btn ui & ts type

Add component naming (premieroctet#92)

* Add component naming

* Fix tests

* Add component name in children inspector

Add import export feature (premieroctet#78)

Add agency link in header

Merge pull request premieroctet#47 from premieroctet/feature/focus

remove children autofocus & add Text Input focus

Version 1.0