Zipping fails with a single file

[uncenter]

Running cloneit https://github.com/alok8bb/cloneit/blob/master/install.sh --zip (or cargo run -- https://github.com/alok8bb/cloneit/blob/master/install.sh --zip) fails with a zipping error.

[alok8bb]

Hmm... will have to check this.

[uncenter]

Ah, I see. Hard coded in the code actually!

cloneit/src/file_archiver.rs

Lines 82 to 84 in 6198556

	if !Path::new(&self.m_src_dir).is_dir() {
	return Err(ZipError::FileNotFound);
	}

[uncenter]

After doing some refactoring (#17) I've come to better understand the codebase. The issue here is that we don't know the files that are being downloaded, and individual files are not downloaded to the source directory (aka we don't even know the file path to potentially add to the zip). I think tracking what files are being downloaded and where, and returning this from the requesting/downloading functions, can unlock a bunch of new functionality; we can log that output to the user (see #14 (comment)), zip the files without using a whole WalkDir instance (perf presumably), etc.

I'll look into how we can do that after finishing up the potential refactors!