Updating typescript version with the new changes

[kalwalt]

From this issue augmentmy-world/artoolkitX.js#28 (comment)
@ThorstenBux @hakandilek We should keep an eye also on the typescript version of the lib. i did some changes but not sure of these. Maybe not a prority, we can do after merging my #1 in the master of artoolkitx/jsartoolkit5 but I wish it was solved.

[kalwalt]

@hakandilek if you want to take a look at the changes this is the PR artoolkitx#86 that we will merge in the artoolkitx/jsartoolkit5 master branch, as a consequence of this my other PR #1

[kalwalt]

I did a quick test to import jsartoolkit5 as a package in a node project on locale. As It Is can''t run because it use in different part of the libs the window object, and in node Is not allowed ( we should use global instead, self Is not also friendly for node? But It Is required for the worker ).
The window objects is used in artoolkit.api.js and artoolkit.three.js libs.