l10n: port link for translation + add french

src/uu/link/locales/en-US.ftl

@@ -1,2 +1,4 @@
 link-about = Call the link function to create a link named FILE2 to an existing FILE1.
 link-usage = link FILE1 FILE2
+
+link-error-cannot-create-link = cannot create link { $new } to { $old }

src/uu/link/locales/fr-FR.ftl

@@ -0,0 +1,5 @@
+link-about = Appelle la fonction link pour créer un lien nommé FILE2 vers un FILE1 existant.
+link-usage = link FILE1 FILE2
+
+# Messages d'erreur
+link-error-cannot-create-link = impossible de créer le lien { $new } vers { $old }

src/uu/link/src/link.rs

@@ -2,16 +2,17 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
+
 use clap::builder::ValueParser;
 use clap::{Arg, Command};
+use std::collections::HashMap;
 use std::ffi::OsString;
 use std::fs::hard_link;
 use std::path::Path;
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UResult};
 use uucore::format_usage;
-
-use uucore::locale::get_message;
+use uucore::locale::{get_message, get_message_with_args};
 
 pub mod options {
     pub static FILES: &str = "FILES";
@@ -20,16 +21,23 @@ pub mod options {
 #[uucore::main]
 pub fn uumain(args: impl uucore::Args) -> UResult<()> {
     let matches = uu_app().try_get_matches_from(args)?;
-
     let files: Vec<_> = matches
         .get_many::<OsString>(options::FILES)
         .unwrap_or_default()
         .collect();
+
     let old = Path::new(files[0]);
     let new = Path::new(files[1]);
 
-    hard_link(old, new)
-        .map_err_context(|| format!("cannot create link {} to {}", new.quote(), old.quote()))
+    hard_link(old, new).map_err_context(|| {
+        get_message_with_args(
+            "link-error-cannot-create-link",
+            HashMap::from([
+                ("new".to_string(), new.quote().to_string()),
+                ("old".to_string(), old.quote().to_string()),
+            ]),
+        )
+    })
 }
 
 pub fn uu_app() -> Command {