Improved model generation

[wouterjdb]

This PR fixes the issues described in #282 and #297.

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Contributor checklist

• 🎉 This PR closes Long connections across Norne separate regions to be removed #282 and closes Expose angle removal constraint for connections to user #297.
• 📜 I have broken down my PR into the following tasks:
  • Fix long connection removal in non-reservoir
  • Expose angle to user via config file
  • Expose non-reservoir removal parameter n to user
  • Find good hyper parameters for test-data set
• 🤖 I have added tests, or extended existing tests, to cover any new features or bugs fixed in this PR.
• 📖 I have considered adding a new entry in CHANGELOG.md.
• 📚 I have considered updating the documentation.

[wouterjdb]

Currently this PR has implemented a smaller or larger than check for the angle - I'm not so sure this is actually the right way @olelod. I think what it would do is the following:

With only the larger than x you would remove:

If you also make it into a smaller than test, you'd remove:

That is not really what we are after?

[wouterjdb]

Conclusion discussion: @olelod @LonnekevB

Only expose angle, don't do the rest yet. Make new issue.

[olelod]

LGTM