Add source information as path of the information

Motivation: To add support for module integration in justl which is an
Emacs extension for driving justfiles within Emacs.

This would allow me to easily discover the file locations of different
just modules and allow the ability to individually open justl buffers
for them within the editor.

src/analyzer.rs

@@ -182,6 +182,7 @@ impl<'run, 'src> Analyzer<'run, 'src> {
       unstable_features.insert(UnstableFeature::ScriptInterpreterSetting);
     }
 
+    let source = root.canonicalize().unwrap();
     let root = paths.get(root).unwrap();
 
     Ok(Justfile {
@@ -205,7 +206,7 @@ impl<'run, 'src> Analyzer<'run, 'src> {
       name,
       recipes,
       settings,
-      source: root.into(),
+      source,
       unexports: self.unexports,
       unstable_features,
       warnings: self.warnings,

src/justfile.rs

@@ -23,7 +23,6 @@ pub(crate) struct Justfile<'src> {
   pub(crate) name: Option<Name<'src>>,
   pub(crate) recipes: Table<'src, Rc<Recipe<'src>>>,
   pub(crate) settings: Settings<'src>,
-  #[serde(skip)]
   pub(crate) source: PathBuf,
   pub(crate) unexports: HashSet<String>,
   #[serde(skip)]