Automatic intersection component

[Algorush]

added a component to determine the size of the parameters required for the intersection component.
Its parameters specify selectors of street elements at the intersection:

northStreet: selector,
southStreet: selector, ...

Example of work:
testEl.setAttribute('auto-intersection', 'southStreet: #left_street; westStreet: #perpendicular_street')

All that remains is to arrange the streets to the appropriate places.
By the way, I found that when adding a Streetmix street from the input prompt, it created with id='http_path', such a selector will not work as it is has wrong format

[Algorush]

I need to fix some issues

[Algorush]

Example of how it works now.
Initial scene with 3 streets:

Add empty a-entity#test element and this line:
test.setAttribute('auto-intersection', "northStreet: #north_street; westStreet: #perpendicular_street; southStreet: #south_street")
Streets take their places automatically, but they must be rotated correctly first. Here is result:

[Algorush]

But save/load doesn't work yet. I'm getting maximum call stack error, I don't remember why it could be, need to debug