add from support for owned references

Author: ofek-sha

src/interned.rs

@@ -108,6 +108,12 @@ impl From<String> for Interned {
     }
 }
 
+impl From<&String> for Interned {
+    fn from(value: &String) -> Self {
+        value.as_bytes().into()
+    }
+}
+
 impl From<&OsStr> for Interned {
     fn from(value: &OsStr) -> Self {
         value.as_encoded_bytes().into()
@@ -120,6 +126,12 @@ impl From<OsString> for Interned {
     }
 }
 
+impl From<&OsString> for Interned {
+    fn from(value: &OsString) -> Self {
+        value.as_encoded_bytes().into()
+    }
+}
+
 impl From<&Path> for Interned {
     fn from(value: &Path) -> Self {
         value.as_os_str().into()
@@ -132,6 +144,12 @@ impl From<PathBuf> for Interned {
     }
 }
 
+impl From<&PathBuf> for Interned {
+    fn from(value: &PathBuf) -> Self {
+        value.as_os_str().into()
+    }
+}
+
 impl Borrow<BorrowedInterned> for Interned {
     fn borrow(&self) -> &BorrowedInterned {
         self.deref()