Adding a list of all available tools

[timmwille]

maybe we can work out collectively a list of tools similar to what was done in the readme but split it into topics and separate files (to make github collaboration easier)?

@yaievy @yyenki @romeoplat what topic shall we address first?

[timmwille]

we could add files like:

• audio.md
• video.md
• grafic.md
• text.md
• engineering.md
• web.md
• operation.md
• collaboration.md