fix(fs): avoid infinite loop searching parent dir

[TheLeoP]

Fixes #83

[gorillamoe]

Thanks for making Kulala a better tool for everyone.

I'm not sure if this is the right approach to deal with it.. If I understand it correctly it will just look up one dir, right?

If so, I wont have that PR getting merged, as is, but will propose a different solution to the problem, because the spec clearly says, that it will traverse the whole directory tree upwards, until it finds a file.

[gorillamoe]

I have to correct myself; it's not the spec that says it, but some other clients do it this way e.g. visual studio

The environment file doesn't have to be in the project folder. Visual Studio looks for an environment file in the folder where the .http file exists. If it's not in that folder, Visual Studio looks through the parent directories to find it. When a file named http-client.env.json is found, the search ends. The file found nearest to the .http file is used.

[TheLeoP]

If I understand it correctly it will just look up one dir, right?

No. It will always stop after finding the first file (hence the limit =1). It just handles better not getting stuck in an infinite loop