add artwork for OWASP project pytm

[jgadsden]

@izar did you want the pytm artwork uploaded to this swag site?

for example https://github.com/izar/pytm/blob/master/docs/pytm-logo.svg

[izar]

sorry, don't know how I missed this here! sure thing, is there anything i need to do for that to happen?

[kingthorin]

Just open a PR 😀

[jgadsden]

@izar , for example I put threat dragon artworks under this directory: https://github.com/OWASP/owasp-swag/tree/master/projects

[bkimminich]

Just open a PR 😀