Stop signs for the turn function in lua profiles

[chaupow]

Issue

Implementing #2652

Tasklist

• CHANGELOG.md entry (How to write a changelog entry)
• update relevant Wiki pages
• add regression / cucumber cases (see docs/testing.md)
• review
• adjust for comments

[SiarheiFedartsou]

@mjjbell what do you think about it? Should we finish it?

[mjjbell]

Yes I think it's worth doing.

I remember reading this when implementing the traffic signal directions in #6153
It seems similar in that you need to know in the direction of approach to the node, so if this PR it too out-of-date, we could try and reuse that to implement it.

[mjjbell]

These changes look very similar to what I did for traffic signals, but they didn't make it to master: d1b9dff

[SiarheiFedartsou]

Yes I think it's worth doing.

We should probably decide what to do with #6354 then - I would expect quite a lot of merge conflicts if do this in current code base and then try to merge #6354

[mjjbell]

Ok, I'll take a look soon.

[DennisOSRM]

closing stale PR. Reopen if still relevant.