Merge branch 'v3' of github.com:vue-generators/vue-form-generator into v3

* 'v3' of github.com:vue-generators/vue-form-generator:
  Bump version to 3.0.0-beta.7 - Update dependencies - Export dist files
  Single export - No more core vs full since both are the same right now - Optionnal fields will be removed from it in future update
  Clean useless folders
  Update submodule dev
  Custom legend block for group - Possibility to use scoped-slot to customise fully how legend is build - Expose `group` and `groupLegend` in slot prop
  vue-generators#509
  vue-generators#522
  vue-generators#521
  vue-generators#501
  Fix deep property path not working

Author: zoul0813

.env.development

@@ -1,2 +1 @@
-VUE_APP_FULL_BUNDLE=true
 VUE_APP_DEV_PROJECT=["basic", "checklist", "custom", "full", "grouping", "multiselect", "multi", "picker"]