feat(nvim): add useful shortcuts from lazyvim

pkgs/nvim/config/keymaps.nix

@@ -4,6 +4,111 @@
 
   # TODO: Move general mappings to which-key
   keymaps = [
+    # better up/down
+    {
+      mode = ["n" "x"];
+      key = "j";
+      action = "v:count == 0 ? 'gj' : 'j'";
+      options = {
+        desc = "Down";
+        expr = true;
+        silent = true;
+      };
+    }
+    {
+      mode = ["n" "x"];
+      key = "<Down>";
+      action = "v:count == 0 ? 'gj' : 'j'";
+      options = {
+        desc = "Down";
+        expr = true;
+        silent = true;
+      };
+    }
+    {
+      mode = ["n" "x"];
+      key = "k";
+      action = "v:count == 0 ? 'gk' : 'k'";
+      options = {
+        desc = "Up";
+        expr = true;
+        silent = true;
+      };
+    }
+    {
+      mode = ["n" "x"];
+      key = "<Up>";
+      action = "v:count == 0 ? 'gk' : 'k'";
+      options = {
+        desc = "Up";
+        expr = true;
+        silent = true;
+      };
+    }
+
+    # Move to window using the <ctrl> hjkl keys
+    {
+      mode = "n";
+      key = "<C-h>";
+      action = "<C-w>h";
+      options = {
+        desc = "Go to Left Window";
+        remap = true;
+      };
+    }
+    {
+      mode = "n";
+      key = "<C-j>";
+      action = "<C-w>j";
+      options = {
+        desc = "Go to Lower Window";
+        remap = true;
+      };
+    }
+    {
+      mode = "n";
+      key = "<C-k>";
+      action = "<C-w>k";
+      options = {
+        desc = "Go to Upper Window";
+        remap = true;
+      };
+    }
+    {
+      mode = "n";
+      key = "<C-l>";
+      action = "<C-w>l";
+      options = {
+        desc = "Go to Right Window";
+        remap = true;
+      };
+    }
+
+    # Resize window using <ctrl> arrow keys
+    {
+      mode = "n";
+      key = "<C-Up>";
+      action = "<cmd>resize +2<cr>";
+      options = {desc = "Increase Window Height";};
+    }
+    {
+      mode = "n";
+      key = "<C-Down>";
+      action = "<cmd>resize -2<cr>";
+      options = {desc = "Decrease Window Height";};
+    }
+    {
+      mode = "n";
+      key = "<C-Left>";
+      action = "<cmd>vertical resize -2<cr>";
+      options = {desc = "Decrease Window Width";};
+    }
+    {
+      mode = "n";
+      key = "<C-Right>";
+      action = "<cmd>vertical resize +2<cr>";
+      options = {desc = "Increase Window Width";};
+    }
     # Disable arrow keys
     {
       mode = ["n" "i"];