chore(toolbox): export all lists into toolbox

[e11sy]

Problem

Now only harcoded list style (ordered list) is exported to toolbox
It is not responsible to the config.defaultStyle as mentioned in #70

Solution

Export all available lists to the toolbar

Related problems

• Now all lists displayed with the same shortcut
• When i actually use shortcut, convertion config is triggered (static getter)
  I expect to convert current block to the NestedList with defaultStyle, and now paste config uses hardcoded unordered style

Note that related problems should be solved in Editor.js
After that hardcoded list style should be removed from convertionConfig