Memorise last open folder

[whoamitty]

Please consider making a Pull Request if you are capable of doing so.

Is your feature request related to a problem? Please describe.
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• My problem is that every time I open the app, my folder project is not opened automaticly, and I should open manualy each time.

Describe the solution you'd like
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• I think possibility to set by settings make Squircle-CE memorise the the last folder opened for open it directly

Describe alternatives you've considered
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• Or can make bookmark like suggered here Bookmark files and folders #125

Additional context
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