Nb visualize

[han16nah]

Added notebook with examples of analyzing and visualizing data.

This might be the final notebook (as of now) and closes #13 Please go through the notebooks and give feedback 😄

If there are further ideas for additional functionalities to showcase or additional notebooks to add, please create new issues.

One open point from my side:

• There are many .db files written in the notebooks, usually just to the current folder. We could work with tempfile here to create them as temporary files which are deleted again at the end (I did that with the LAZ point clouds downloaded in notebook 08 (but not in notebook 04)). That's something to discuss.

[bhoefle-3dgeo]

I will check it in detail. Thanks. Good would be to make the deleting or temporary files possible as option. Both ways have their usage. sometimes it is good to have the files at hand, to test some other parameters - temporary files make it difficult.