tests: folder with spaces

[domenkozar]

Fixes https://github.com/cachix/devenv/issues/1107

nix build
PATH=$PWD/result/bin:$PATH ./result/bin/devenv-run-tests --only 'folder with spaces' tests

[eftichis0202]

Fixes #1107

nix build
PATH=$PWD/result/bin:$PATH ./result/bin/devenv-run-tests --only 'folder with spaces' tests

I tried running this and got the below as a result:

nix build PATH=$PWD/result/bin:$PATH ./result/bin/devenv-run-tests --only 'folder with spaces' tests path '/Users/eftichis0202/Avriofilms M.I.K.E Dropbox/Felix Schneider/06 Websites/03 Zuschuss Zentrale/_NEW Repos/oux-web' does not contain a 'flake.nix', searching up error: path '/Users/eftichis0202/Avriofilms M.I.K.E Dropbox/Felix Schneider/06 Websites/03 Zuschuss Zentrale/_NEW Repos/oux-web' is not part of a flake (neither it nor its parent directories contain a 'flake.nix' file) zsh: no such file or directory: ./result/bin/devenv-run-tests

[eftichis0202]

@domenkozar Could you help me out with this?