docs(samples): Add Game Server deployment samples

[pooneh-m]

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

Fixes #91 🦕

[pooneh-m]

@Laremere please take a look.

[codecov]

Codecov Report

Merging #92 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #92   +/-   ##
=======================================
  Coverage   98.19%   98.19%           
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  Files           8        8           
  Lines        6749     6749           
  Branches      272      264    -8     
=======================================
  Hits         6627     6627           
  Misses        118      118           
  Partials        4        4           

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[JustinBeckwith]

👋 for the lint issue, should be able to run npm run fix from the root

[pooneh-m]

Thanks. I had some clarification questions, since this is the first time I am contributing to this repo.

[Laremere]

FYI, canonical examples: https://github.com/GoogleCloudPlatform/golang-samples/tree/master/gaming/servers

[JustinBeckwith]

Looks great! Thanks for sticking with the feedback.