feat(#660): add @nuxtjs/axios support to router

[Decipher]

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

Added support for Nuxt Axios module in Router plugin as per the same feature in the core Druxt plugin.
Fixes #660

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.

Screenshots/Media:

[changeset-bot]

🦋 Changeset detected

Latest commit: 07548ad

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
druxt-router	Minor
druxt-blocks	Patch
druxt-breadcrumb	Patch
druxt-entity	Patch
druxt-site	Patch
druxt-views	Patch

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[codecov]

Codecov Report

Merging #661 (07548ad) into develop (400e4f8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #661   +/-   ##
========================================
  Coverage    96.14%   96.14%           
========================================
  Files           91       91           
  Lines         2362     2362           
  Branches       509      509           
========================================
  Hits          2271     2271           
  Misses          76       76           
  Partials        15       15           

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