[Fix] multiple settings writes

[arielj]

This PR fixes #1463 by only writting settings when they change, and only after they are completely loaded. This applies for both Heroic's settings and games' settings.

This should improve the consistency of settings, we were storing things so many times while things where loading (I've seen up to 16 writes during the initial render!!) that it probably created some issues with race conditions having that many writes to the same files all at once.

How to test/QA

I added a call to logInfo that prints information on the logs every time call to writeConfig is done. You can play around with the settings while checking at the logs to see this is working as expected.

Note that the diff in the Files changed tab of the PR is a mess, it doesn't really reflect the changes properly, github gets really confused because I moved things around.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[flavioislima]

Looks good in general.
In the future, I believe that could be fixed by using a React Hook that could work to write and read the settings.
But for now that is doing a good job :)