fix: type defs for stream upload methods

[nsine]

All stream upload methods return stream itself, not promise.
This PR fixes typings for them

[strausr]

Thank you for your contribution! Can you please update package.json to include ts-stream and update cloudinary_ts_spec.ts to expect UploadStream for stream functions?

[nsine]

@strausr I think using ts-stream is not necessary. Adding @types/node would be enough for running tests

[nsine]

can smb also look at ci? it fails in both of my PRs: this one and #335
what would be the reason?

[asisayag2]

@nsine, thanks for the PR.
We will look into it as soon as possible and this will include making sure the CI is passing.

[strausr]

You're correct. Can you please update package.json to include @types/node and update cloudinary_ts_spec.ts to expect UploadStream for stream functions?

[nsine]

@strausr hm
but i already did it month ago 😅
41bc0ef

[strausr]

@nsine Thanks!!