add some things

lua/custom/plugins/null-ls.lua

@@ -0,0 +1,14 @@
+local null_ls = require("null-ls")
+
+null_ls.setup({
+	sources = {
+		null_ls.builtins.formatting.black,
+		null_ls.builtins.formatting.isort,
+		null_ls.builtins.formatting.prettier.with({
+			filetypes = { 'css' } }),
+		null_ls.builtins.diagnostics.eslint,
+		null_ls.builtins.completion.spell,
+	},
+})
+
+return {}