Increased completion keyword length

Also made lsp the first item in sources.

config/plugins/cmp.nix

@@ -2,6 +2,8 @@
   plugins.cmp = {
     enable = true;
     settings = {
+      completion = {keyword_length = 2;};
+
       mapping = {
         "<C-n>" = "cmp.mapping.select_next_item()";
         "<C-p>" = "cmp.mapping.select_prev_item()";
@@ -20,11 +22,11 @@
       '';
 
       sources = [
+        {name = "nvim_lsp";}
         {name = "buffer";}
         {name = "cmdline";}
         {name = "cmp-clippy";}
         {name = "luasnip";}
-        {name = "nvim_lsp";}
         {name = "path";}
       ];
     };