Support for Get url command

[sandeep-paliwal]

Added command to return Action URLs

Description

For all actions in manifest
Specific action using 'action' option
CDN URLs for actions using 'cdn' flag

Related Issue

Motivation and Context

How Has This Been Tested?

unit tests
CLI run

Screenshots (if appropriate):

Types of changes

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

Checklist:

• [x ] I have signed the Adobe Open Source CLA.
• [ x] My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• [x ] I have read the CONTRIBUTING document.
• [x ] I have added tests to cover my changes.
• [x ] All new and existing tests passed.

[codecov]

Codecov Report

Merging #186 into master will increase coverage by 0.33%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #186      +/-   ##
==========================================
+ Coverage   92.20%   92.53%   +0.33%     
==========================================
  Files          20       21       +1     
  Lines         577      603      +26     
  Branches       73       75       +2     
==========================================
+ Hits          532      558      +26     
  Misses         40       40              
  Partials        5        5              

Impacted Files	Coverage Δ
src/commands/app/get-url.js	100.00% <100.00%> (ø)

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[moritzraho]

typo: Get action URLs

[sandeep-paliwal]

done