[ember] create ember entry point to official storybook

[gabrielcsapo]

What I did

• Adds an entry point to the ember example app

[codecov]

Codecov Report

Merging #4426 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4426   +/-   ##
=======================================
  Coverage   35.98%   35.98%           
=======================================
  Files         555      555           
  Lines        6650     6650           
  Branches      871      871           
=======================================
  Hits         2393     2393           
  Misses       3810     3810           
  Partials      447      447

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[Hypnosphi]

It should be a symlink not a text file

[pksunkara]

My bad, github shows symlink like this, so thought this diff contained a symlink. Should have looked at the details.

[pksunkara]

@gabrielcsapo Can you make a PR fixing this? Thanks.