Testfiles: create directory to group native samples

[mr-tz]

To better organize the testfiles, potentially add directories for:

• native binaries (malware und benign?)
• PMA labs

[hcnpeiris]

Hi @mike-hunhoff I am working on this issue. Could you assign it to me?

[mike-hunhoff]

Please let us know here if you have any questions 😄

[franklbh]

Hi @mike-hunhoff ! Is this issue still open? If so, would you be willing to assign this to me? I'm prepared to start immediately and can provide regular updates on my progress.

[mr-tz]

there's already a PR open for this, so feel free to find another issue to tackle