Remove normalization of file paths into globs

Everything below vinyl-fs expects globs to use `/` instead of `\\` (since `\\` is for escaping). However, I believe both the latest major versions of `vinyl-fs` and `glob-watcher` accept `\\` in globs.

We should ensure both projects only accept `/` for globs. This also requires separating globs from file paths in our test constants.

Locate the code that normalizes file paths into globs and the test constants mentioned in the issue. Separate glob constants from file-path constants, then run the existing test suite to verify that globs use `/` and that the intended path behavior is preserved.

Written by the indexing model from the issue text.