Add a `set_node(x);` script for Moving Platforms + Tilemaps

[Rusty-Box]

A script that allows to instantaneously move (pretty much teleport) a moving platform or tilemap to a specific path node.

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Edit: Sinice commit a7aa8a8 added a differently working set_node(x); script which however is also quite useful, I recommand making another script for the actual proposal mentioned above.

[Rusty-Box]

Unfortuatly that didn't "fix" it

[Rusty-Box]

I would actually have a time/speed setting for the current set_node(x); script added. Also we now need a new name for the actual script I was talking about.

[Rusty-Box]

This was adressed by #2865 - Closing this.