plugins/cmp/sources: add cmp-vimtex

Author: khaneliman

plugins/cmp/sources/default.nix

@@ -165,6 +165,10 @@ let
       pluginName = "cmp-vim-lsp";
       sourceName = "vim_lsp";
     }
+    {
+      pluginName = "cmp-vimtex";
+      sourceName = "vimtex";
+    }
     {
       pluginName = "cmp-vimwiki-tags";
       sourceName = "vimwiki-tags";