Add basic portfolio template files

[Schiller-Stoff]

DESC

• after typescript etc has been setup
• add according to this template: https://github.com/smakosh/gatsby-portfolio-dev

TODOs

• [x] setup base react-bootstrap integration etc.
• [x] add basic assets to static folder /img
• [x] add fonts of template
• [x] add base template files
• [x] make fully working (with limited features / not everything should work according to template )

[Schiller-Stoff]

done