Connections between patches and regions should be shown

[Patryk26g]

Brief Description of What This PR Does

This PR adds connections between the patches and regions sides. I increased the margin between the patches and also changed the color of the connections to gray (subject to change, maybe they also should be a little bit transparent?) because otherwise it would get a little bit to crowded with all of the connections.

PS. Happy new year!!!

Related Issues

Closes #3556

Progress Checklist

Note: before starting this checklist the PR should be marked as non-draft.

• PR author has checked that this PR works as intended and doesn't
  break existing features:
  https://wiki.revolutionarygamesstudio.com/wiki/Testing_Checklist
  (this is important as to not waste the time of Thrive team
  members reviewing this PR)
• Initial code review passed (this and further items should not be checked by the PR author)
• Functionality is confirmed working by another person (see above checklist link)
• Final code review is passed and code conforms to the
  styleguide.

Before merging all CI jobs should finish on this PR without errors, if
there are automatically detected style issues they should be fixed by
the PR author. Merging must follow our
styleguide.

[revolutionary-bot]

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[CountingBeeps]

This is a great start, but I don't always like how these look. I think the visuals could use a little work before this is merged. Specifically in this case:

[hhyyrylainen]

I did a partial review of this PR. I left a big chunk of the code unreviewed but it was probably mostly just the path algorithm changes that caused the internal API to change, which looks long but isn't actually that complicated of a change...

This is already in pretty good shape I think overall design wise.

Anyway I'd like to first get the biggest issues out of the way before reviewing everything in here:

• The columns and rows variables which will break save compatibility
• Use of zindex in the line rendering on the map

Ones those are taken care of I think this will be close to done already. (though I just saw @CountingBeeps comment)

[Patryk26g]

This is a great start, but I don't always like how these look. I think the visuals could use a little work before this is merged. Specifically in this case:

It should look better now

[Patryk26g]

I did a partial review of this PR. I left a big chunk of the code unreviewed but it was probably mostly just the path algorithm changes that caused the internal API to change, which looks long but isn't actually that complicated of a change...

This is already in pretty good shape I think overall design wise.

Anyway I'd like to first get the biggest issues out of the way before reviewing everything in here:

• The columns and rows variables which will break save compatibility
• Use of zindex in the line rendering on the map

Ones those are taken care of I think this will be close to done already. (though I just saw @CountingBeeps comment)

I have removed z-indeces and the column and row variables. I also adjusted the look of the patches