Added Appetize badge

[madhurgupta10]

Description
Fixes #2842 Hosting App on Appetize

What changes did you make and why?
Hosted 2.10.2 on Appetize and added the badge so that people can try it out.

[codecov-io]

Codecov Report

Merging #2866 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #2866   +/-   ##
======================================
  Coverage    3.42%   3.42%           
======================================
  Files         246     246           
  Lines       12193   12193           
  Branches     1071    1071           
======================================
  Hits          418     418           
  Misses      11744   11744           
  Partials       31      31

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[domdomegg]

In the discussion at #2842 (comment) there is "we will not advertise appetize.io as a mainstream way to try the app, as we would quickly overflow the free tier". Has this issue been fixed?

[madhurgupta10]

@domdomegg No that issue is not fixed, we will have 100 min per month, but I think that only a few people use the app this way, as it's sole purpose is to get the look of the app on different devices without building/installing.

[madhurgupta10]

@nicolas-raoul @misaochan Please review the PR :)

[neslihanturan]

Seems fine but I think discussion is not finalized. At least I didn't understand the result of the discussion.

[neslihanturan]

Thanks @madhurgupta10