Add vue-input-contenteditable (#2931)

This adds [vue-input-contenteditable](https://github.com/Cobertos/vue-input-contenteditable) to the Forms > Miscellaneous section. It meets all the guidelines as listed in the CONTRIBUTING.md

Author: Cobertos

README.md

@@ -1841,6 +1841,7 @@ Tooltips / popovers
  - [vue-long-click](https://github.com/ittus/vue-long-click) - Long click (long press) directive library for vue, support mobile and desktop.
  - [vue-ui-predicate](https://github.com/FGRibreau/ui-predicate/tree/master/packages/ui-predicate-vue) - A rules editor, generic filtering UI, predicates component for Vue JS.
  - [vue-mobile-detection](https://github.com/ajerez/vue-mobile-detection) - Vue.js prototype function `this.$isMobile()` that returns a Boolean value depending on whether or not the user is browsing with a mobile.
+ - [vue-input-contenteditable](https://github.com/Cobertos/vue-input-contenteditable) - A Vue component wrapper for `contenteditable` with all the features you normally expect. Make beautiful inputs without the restrictions of `input[type='text']`. 
 
 #### Wizard