gl init should automatically create a new folder

[JohanSpaedtke]

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One case where I think git is more intuitive than gl is when you're about to clone a new repo

compare

cd /a/folder/with/lots/of/git/projects
gl init https://github.com/SomeUser/SomeRepo.git                                                                                                                                                                               
✘ fatal: destination path '/a/folder/with/lots/of/git/projects' already exists and is not an empty directory.

to

cd /a/folder/with/lots/of/git/projects
git clone https://github.com/SomeUser/SomeRepo.git
Cloning into 'SomeRepo'...

I think it makes sense the way git does it and it saves me from writing

mkdir SomeRepo
cd SomeRepo