fix(nvim): update settings

pkgs/nvim/config/sets.nix

@@ -7,6 +7,9 @@
     luaLoader.enable = true;
 
     opts = {
+      # Autosave when changing buffers
+      autowrite = true;
+
       # Enable relative line numbers
       number = true;
       relativenumber = true;
@@ -78,6 +81,16 @@
       # Place a column line
       colorcolumn = "80";
 
+      # Customize sidebar characters
+      fillchars = {
+        foldopen = "";
+        foldclose = "";
+        fold = " ";
+        foldsep = " ";
+        diff = "╱";
+        eob = " ";
+      };
+
       # Reduce which-key timeout to 10ms
       timeoutlen = 10;
 
@@ -104,6 +117,7 @@
 
       # We don't need to see things like INSERT anymore
       showmode = false;
+      showcmd = false;
 
       # Maximum number of items to show in the popup menu (0 means "use available screen space")
       pumheight = 0;