Is your feature improvement request related to a problem? Please describe.
The configuration/log plugin has implemented a logic to upload files to the binary storage of Cumulocity,
However if I develop an own plugin and need to upload files to the binary storage of c8y, I currently can not do so without implementing own Rest API logic into my plugin, using the jet token etc. .

Describe the solution you'd like
Since file upload logic is already available somehow in the code I would basically wish something on the cli such as:

tedge file upload c8y --file /test/filename.txt

For the cli I used the structure of the cert upload. I would basically expect to get back the binaryID of the uploaded file.