Add inlineToolbar property (#1293)

* Add inlineToolbar property

* Fix lint errors

* Fix comments

Co-authored-by: Murod Khaydarov <murod.haydarov@inbox.ru>

* Sort Tools Working, Can be optimized further

* Fix dataset error and use children

* Fix lint errors

* Add as improvement to CHNAGELOG.md

* Fix comments

Co-authored-by: Peter Savchenko <specc.dev@gmail.com>

* Add comments and small fixes

* Fix lint errors

* Fix sortTools() and check inlineToolbar property

* Fix lint errors

* Fix conditions and property names

* Separate block toggler from buttons list in ui

* Fix lint errors

* Fix condition names in allowedToShow()

* Minor bug fixes

* Fix linter warnings

* Update docs/CHANGELOG.md

Co-authored-by: Murod Khaydarov <murod.haydarov@inbox.ru>

* create inlineToolbarSettings() method

* Minor fixes

* Clearify boolean casting

* upd bundle

* fix getInlineToolbarSettings

* refactor & create new instance every showing

* remove unused codee

Co-authored-by: Murod Khaydarov <murod.haydarov@inbox.ru>
Co-authored-by: Peter Savchenko <specc.dev@gmail.com>

example/example-dev.html

@@ -98,6 +98,14 @@
        */
       holder: 'editorjs',
 
+      /**
+       * Common Inline Toolbar settings
+       * - if true (or not specified), the order from 'tool' property will be used
+       * - if an array of tool names, this order will be used
+       */
+      // inlineToolbar: ['link', 'marker', 'bold', 'italic'],
+      // inlineToolbar: true,
+
       /**
        * Tools list
        */
@@ -107,7 +115,7 @@
          */
         header: {
           class: Header,
-          inlineToolbar: ['link'],
+          inlineToolbar: ['marker', 'link'],
           config: {
             placeholder: 'Header'
           },