enable import_simulation to run without user-import when simulation exists

[qacwnfq]

Description

import_simulation command should run automatically and regularly.
For this reason, there should be a way to preemptively specify the user-input that might be required.

Related Issues

#349

Design Decisions

As simple as possible.

Performance & Quality

My editor added line breaks for lines that were too long.

Checklist

I, the author of this PR checked the following requirements for good software quality:

• The code is properly formatted (I ran the formatter)

• The code is written with our software quality standards (I ran the linter)

• The code is written using our code style

• Extensive in source documentation has been added

• Unit and/or integration tests have been added

• I tried addressing all new accessibility problems displayed in the console and documented if they can't be fixed

• I attached performance measurements to prevent performance degradation

• I added the changes to the next release section of the changelog

I, the reviewer checked the following things:

• I ran the software once and tried all new and related functionality to this PR
• I looked at all new and changed lines of code and commented on possible problems
• I read the added documentation and checked if it is understandable and clear
• I checked the added tests for completeness
• I checked the internationalized strings for spelling errors
• I checked the performance metrics for problems or unexplained degradation
• I checked that the changes are noted in the changelog

[qacwnfq]

@annawendler please review :)

[NXXR]

I'm not Anna but this looks good to me