File upload inside a file

[lpoli]

When we upload a file to some remotepath it creates parent directories if they already are not present. So when a file is uploaded say /a.txt blobber stores it as file type f, which is absolutely fine.

Now when we upload a file say b.txt with remotepath /a.txt/b.txt then blobber happily accepts it and when we do zbox list --remotepath /a.txt we can see b.txt in its list. And when we do zbox list --remotepath /, it shows a.txt with type f.

Blobber can provide this feature/issue, but it results in inconsistencies and lots of confusion for other tools and direct user as well.
We should not allow upload inside a file.

[cnlangzi]

@lpoli please leave good first issue for newcomers if it is possible