Can't tag functions if project name contains `functions`

[MysteryBlokHed]

This following code from files::get_namespace uses the following code to get a path that ends with the namespace folder:

databind/src/lib/files.rs

Lines 62 to 68 in 6d36a85

	let namespace_folder = functions_path
	.as_ref()
	.to_str()
	.unwrap()
	.split("functions")
	.next()
	.unwrap();

Because of the .split("functions"), the first instance of functions in the path is split. This is a problem if any part of the path contains the word functions.

[MysteryBlokHed]

#141 did not fix this issue and was reverted in 4a762fd.