feat(lsp): add optional slint lsp config

lua/plugins/20-lsp.lua

@@ -22,6 +22,9 @@ return {
                     "--enable-config", -- Enable .clangd and clangd.yaml files
                 },
             },
+            slint_lsp = {
+                root_dir = function() end, -- Fix missing root_dir issue in neoconf (lspconfig doesn't define it...)
+            },
         },
     },
 }

lua/plugins/50-user.lua

@@ -2,4 +2,5 @@
 return {
     -- { "echasnovski/mini.align", event = "User AstroFile" },
     { "tpope/vim-abolish", event = "User AstroFile" },
+    { "slint-ui/vim-slint", ft = "slint" },
 }