printer: add hyperlinks

This commit represents the initial work to get hyperlinks working and
was submitted as part of PR #2483. Subsequent commits largely retain the
functionality and structure of the hyperlink support added here, but
rejigger some things around.

crates/printer/src/hyperlink_aliases.rs

@@ -0,0 +1,23 @@
+/// Aliases to well-known hyperlink schemes.
+///
+/// These need to be sorted by name.
+pub const HYPERLINK_PATTERN_ALIASES: &[(&str, &str)] = &[
+    #[cfg(unix)]
+    ("file", "file://{host}/{file}"),
+    #[cfg(windows)]
+    ("file", "file:///{file}"),
+    // https://github.com/misaki-web/grepp
+    ("grep+", "grep+:///{file}:{line}"),
+    ("kitty", "file://{host}/{file}#{line}"),
+    // https://macvim.org/docs/gui_mac.txt.html#mvim%3A%2F%2F
+    ("macvim", "mvim://open?url=file:///{file}&line={line}&column={column}"),
+    ("none", ""),
+    // https://github.com/inopinatus/sublime_url
+    ("subl", "subl://open?url=file:///{file}&line={line}&column={column}"),
+    // https://macromates.com/blog/2007/the-textmate-url-scheme/
+    ("textmate", "txmt://open?url=file:///{file}&line={line}&column={column}"),
+    // https://code.visualstudio.com/docs/editor/command-line#_opening-vs-code-with-urls
+    ("vscode", "vscode://file/{file}:{line}:{column}"),
+    ("vscode-insiders", "vscode-insiders://file/{file}:{line}:{column}"),
+    ("vscodium", "vscodium://file/{file}:{line}:{column}"),
+];