examples(vuetify): use@nuxtjs/vuetify module

[farnabaz]

Update Vuetify examples and use https://github.com/nuxt-community/vuetify-module/
close #6337

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #7767 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #7767   +/-   ##
=======================================
  Coverage   68.83%   68.83%           
=======================================
  Files          90       90           
  Lines        3821     3821           
  Branches     1034     1034           
=======================================
  Hits         2630     2630           
  Misses        968      968           
  Partials      223      223           

Flag	Coverage Δ
#unittests	68.83% <ø> (ø)

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