Support subdirs for namespace hierarchy

[gax]

@sindoc

Could you please point me to the reasons why it would be an issue to map to FS directories?

Proposal: Changing How Namespaces Function in Logseq

Current Implementation Currently, when creating a file in a namespace, for example, [[root/branch/leaf]] Logseq will save the file on disk in the format root.branch.leaf.md Logseq converts / to . due to / being a reserved character in many filesystems, and it’s used to indicate a file path example: /home/user/Documents/file.md Logseq will also add a property to the page to display the title differently from the filename on disk title:: root/branch/leaf Current Implementation…