FR: Put data.json[[navigationHistory]] in a separate config file

[MattTheVV]

When placing the ExcaliBrain plugin configs under git version control, it is inconvenient that changes are staged in which only the navigationHistory key-value pair in data.json is changed.

Could we store such frequently changing values into a separate file we can .gitignore?

🙏 Appreciate the plugin, brings great new perspectives.

[zsviczian]

For now, (in 0.2.0) I stopped saving navigation history on each update, but will only save it each time the plugin offloads. I will think about a better solution.