feat(nix): migrate editorconfig

nix/home/default.nix

@@ -11,6 +11,7 @@ in
     ./asdf
     ./bat
     ./ctags
+    ./editorconfig
     ./gnupg
     ./hammerspoon
     ./karabiner

nix/home/editorconfig/default.nix

@@ -0,0 +1,24 @@
+{ pkgs, ... }:
+
+{
+  editorconfig = {
+    enable = true;
+    settings = {
+      "*" = {
+        charset = "utf-8";
+        end_of_line = "lf";
+        indent_style = "tab";
+        insert_final_newline = true;
+        trim_trailing_whitespace = true;
+      };
+      "*.{md,markdown,pandoc}" = {
+        trim_trailing_whitespace = false;
+      };
+      "Makefile" = {
+        indent_style = "tab";
+      };
+    };
+  };
+
+  home.packages = [ pkgs.editorconfig-core-c ];
+}