feat(config): add GitDir type

src/server/config/mod.rs

@@ -392,5 +392,24 @@ impl Display for ForgeType {
     }
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
+pub struct GitDir(PathBuf);
+impl GitDir {
+    #[allow(dead_code)] // TODO:
+    pub const fn pathbuf(&self) -> &PathBuf {
+        &self.0
+    }
+}
+impl std::fmt::Display for GitDir {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{self:?}")
+    }
+}
+impl From<&str> for GitDir {
+    fn from(value: &str) -> Self {
+        Self(value.into())
+    }
+}
+
 #[cfg(test)]
 mod tests;