Changed emmet lsp, silenced repeated key warning from which-key, fixed annoying rust-analyzer error

after/ftplugin/rust.lua

@@ -0,0 +1,9 @@
+for _, method in ipairs({ 'textDocument/diagnostic', 'workspace/diagnostic' }) do
+	local default_diagnostic_handler = vim.lsp.handlers[method]
+	vim.lsp.handlers[method] = function(err, result, context, config)
+		if err ~= nil and err.code == -32802 then
+			return
+		end
+		return default_diagnostic_handler(err, result, context, config)
+	end
+end