Adjusting DB types for USERDATA table to start addressing issue #94

[srmeier]

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Description

This PR is in combination with this PR against the ko-db repo. It updates the SQL types to binary and allows for the user to save their character information (tested locally). This is a small piece of issue #94.

💔Thank you!

[stevewgr]

As also mentioned on discord, sorry for keeping this on hold for some time. I was away and now reworking the ko-db project so that I can hopefully by tomorrow rebase your PRs and merge them. The changes works as intended 👍 Thanks for submitting it.