feat(nvim): typst; tidy language specific configurations

modules/coding/langs/all.nix

@@ -17,6 +17,7 @@ lib.my.makeSwitch {
       lua.enable = true;
       java.enable = true;
       qml.enable = true;
+      typst.enable = true;
     };
   };
 }

modules/coding/langs/typst.nix

@@ -0,0 +1,21 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+lib.my.makeSwitch {
+  inherit config;
+  optionName = "Typst";
+  optionPath = [
+    "coding"
+    "langs"
+    "typst"
+  ];
+  config' = {
+    my.hm.home.packages = with pkgs; [
+      typst
+      tinymist
+    ];
+  };
+}