update lsp diagnostics to use internal functions

lua/plugins/nvim-lint.lua

@@ -1,7 +1,8 @@
 return {
 	"mfussenegger/nvim-lint",
 	config = function()
-		require("lint").linters_by_ft = {
+		local lint = require("lint")
+		lint.linters_by_ft = {
 			markdown = { "markdownlint" },
 			lua = { "luacheck" },
 			py = { "flake8", "pylint", "pydocstyle", "pycodestyle", "mypy" },
@@ -20,5 +21,14 @@ return {
 			"-e",
 			"2250",
 		}
+		local lint_augroup = vim.api.nvim_create_augroup("lint", { clear = true })
+
+		vim.api.nvim_create_autocmd({ "BufEnter", "BufWritePost", "InsertLeave" }, {
+			group = lint_augroup,
+			callback = function()
+				lint.try_lint()
+			end,
+		})
 	end,
+	event = { "BufReadPre", "BufNewFile" },
 }