XCD-144 Fix shaking measurement

[MichalDybizbanskiCreoox]

Not sure what was the original intention to hide measurement controls when camera was too close to them, but it causes glitches as described at https://creoox.atlassian.net/browse/XCD-175?focusedCommentId=13492
Removing this special logic seems to fix the reported issue.

[xeolabs]

With this PR, what is the behaviour of measurent controls when they intersect the front clipping plane?

[MichalDybizbanskiCreoox]

The lines are visible even when they are "behind" the camera, which is no good I guess.
The opposite is not good either though, because if one end of a line is behind the camera, but the other is in front of it, a part of the line should be visible, but that's tricky to achieve with DOM elements.

[MichalDybizbanskiCreoox]

The PR has been updated since the previous comment to introduce a significant change to the architecture of DOM elements (Dot, Wire, Label) visuals management.
Instead of being managed from a plugin abstraction that uses them (e.g. a DistanceMeasurement) the elements are now responsible for responding to view-related changes (camera, section planes etc) by themselves.

[MichalDybizbanskiCreoox]

I've tested the branch with all examples under https://xeokit.github.io/xeokit-sdk/examples/measurement/, all worked correctly.