Add module.exports.prepare Test with Fix

[GedasGa]

Platforms affected

none

Motivation and Context

Increase test coverage

Description

Wrote tests for module.exports.prepare. Fixed an issue in prepareIcons, discovered by testing. Also, removed my repo data from mock config.xml.

Testing

npm t

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[erisu]

LGTM

[codecov-io]

Codecov Report

Merging #23 into master will increase coverage by 5.81%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #23      +/-   ##
==========================================
+ Coverage   75.16%   80.98%   +5.81%     
==========================================
  Files          12       12              
  Lines         447      447              
==========================================
+ Hits          336      362      +26     
+ Misses        111       85      -26

Impacted Files	Coverage Δ
bin/templates/cordova/lib/prepare.js	100% <100%> (+20%)	⬆️

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