Authentication (#368)

* Add troubleshooting FAQ

* Added API troubleshooting FAQ

* proper spacing

* Added more CodeMagic Deployment tips

* Added pro tips and fixed typos and created one image

* changes made (renaming of files)

* fixed typos, added admonitions, corrected grammar issues

* improved formating, all feedbacks implemented

* improved formating

* improved formating

* improved formatting

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Co-authored-by: David Edet Orok <[email protected]>
Co-authored-by: Pooja Bhaumik <[email protected]>

Author: 3 people