Add `uri` module

Currently only has a function to parse vscode_sys::Uri->iri_string::UriAbsoluteString, but will be extended along with improvements to how the pijul: URI is handled.

Created by  finchie  yesterday at 21:01
POA32CUWX2HB7CYEYCXQSYWNY5AHCY3XCB6MDSA55ICJZAKKNVSQC
Change contents