add language HCL

Terraform doesn't register hcl and doesn't offer good DX if manually set
for editing e.g. nomad HCL files.

Incl. reformat with alejandra

modules/plugins/languages/clang.nix

@@ -57,7 +57,7 @@
       dapConfig = ''
         dap.adapters.lldb = {
           type = 'executable',
-          command = '${cfg.dap.package}/bin/lldb-dap',
+          command = '${cfg.dap.package}/bin/lldb-vscode',
           name = 'lldb'
         }
         dap.configurations.cpp = {

modules/plugins/languages/rust.nix

@@ -173,7 +173,7 @@ in {
             dap = {
               adapter = {
                 type = "executable",
-                command = "${cfg.dap.package}/bin/lldb-dap",
+                command = "${cfg.dap.package}/bin/lldb-vscode",
                 name = "rustacean_lldb",
               },
             },

modules/plugins/theme/supported-themes.nix

@@ -6,7 +6,7 @@
   inherit (lib.trivial) boolToString warnIf;
 in {
   onedark = {
-    setup = {style ? "dark", ...}: ''
+    setup = {style ? "dark"}: ''
       -- OneDark theme
       require('onedark').setup {
         style = "${style}"
@@ -30,7 +30,7 @@ in {
   };
 
   dracula = {
-    setup = {transparent, ...}: ''
+    setup = {transparent}: ''
       require('dracula').setup({
         transparent_bg = ${boolToString transparent},
       });