catalog: shell: Introduce clear-selected command.

'clear-selected' allows to clear all the match patterns from the list of
patterns for a subsequent restore.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>

src/backup/catalog_shell.rs

@@ -64,6 +64,10 @@ pub fn catalog_shell_cli() -> CommandLineInterface {
                 .arg_param(&["path"])
                 .completion_cb("path", Shell::complete_path)
         )
+        .insert(
+            "clear-selected",
+            CliCommand::new(&API_METHOD_CLEAR_SELECTED_COMMAND)
+        )
         .insert(
             "restore-selected",
             CliCommand::new(&API_METHOD_RESTORE_SELECTED_COMMAND)
@@ -466,6 +470,15 @@ fn deselect_command(path: String) -> Result<(), Error> {
     })
 }
 
+#[api( input: { properties: { } })]
+/// Clear the list of files selected for restore.
+fn clear_selected_command() -> Result<(), Error> {
+    Context::with(|ctx| {
+        ctx.selected.clear();
+        Ok(())
+    })
+}
+
 #[api(
     input: {
         properties: {