vim: Add dhall stuff

home/vim-dev/default.nix

@@ -26,6 +26,7 @@ in {
       vim-protobuf
       vim-javascript
       vim-vue-plugin
+      dhall-vim
       kotlin-vim
       Jenkinsfile-vim-syntax
     ]

home/vim-dev/dev.lua

@@ -30,6 +30,9 @@ require'lspconfig'.rnix.setup{
 require'lspconfig'.rls.setup{
   on_attach = on_attach
 }
+require'lspconfig'.dhall_lsp_server.setup{
+  on_attach = on_attach
+}
 require'lspconfig'.eslint.setup{
   on_attach = on_attach
 }