Ability to partially match documentation path names

[Ruin0x11]

It should be possible to search for part of a path and return results that contain that portion of the path.

For example, if the path crate::one::two::three is a module in a documentation store, then searching for these should include the module in the search results:

• three
• two::three
• one::two::three

And searching for these should include crate::one::two, but not one::two::three:

• two
• one::two

[Ruin0x11]

This is currently possible.