Provide links and material for beginners and starters

[BerndBayerlein]

• Add tools and libaries for python
• Add teaching materials (GitLab, Thesaurus, CQs)
• Add links to videos and tutorials (e.g. Tensile Test, Harald, ...)

[BerndBayerlein]

Created Folder first-steps

contains already some information

please extend and possbily restructure if necessary