fix: arg parsing

The 'pacdef group import' argument was called 'files', while we
expected it to be called 'groups'.

crates/pacdef_core/src/args/cli.rs

@@ -35,7 +35,7 @@ fn get_group_cmd() -> Command {
         .about("import one or more group files")
         .arg_required_else_help(true)
         .arg(
-            Arg::new("files")
+            Arg::new("groups")
                 .num_args(1..)
                 .required(true)
                 .help("the file to import as group"),

crates/pacdef_core/src/args/parsing.rs

@@ -61,6 +61,7 @@ fn get_edit(args: &clap::ArgMatches) -> Edit {
 }
 
 fn get_groups(args: &clap::ArgMatches) -> Groups {
+    dbg!(&args);
     Groups(
         args.get_many::<String>("groups")
             .expect(ARGS_CONSISTENT)