fish: Add cargo add/remove --dev abbreviations

modules/fish.nix

@@ -98,12 +98,14 @@
       cu = "cargo update";
       ca = "cargo add";
       cab = "cargo add --build";
+      cad = "cargo add --dev";
       cb = "cargo build";
       cr = "cargo run";
       cs = "cargo search";
       cn = "cargo new";
       crm = "cargo remove";
       crmb = "cargo remove --build";
+      crmd = "cargo remove --dev";
       cc = "cargo clippy";
       cf = "cargo fmt";