add missing "required" fields to node_config table

[friofry]

Bug Report

Description

KeycardPairingDataFile string validate:"required" is marked as required in config.go

But it's not inserted/loaded in node_config.go:

insertNodeConfig:
    INSERT OR REPLACE INTO node_config (
        network_id, data_dir, keystore_dir, node_key, no_discovery, rendezvous,
        listen_addr, advertise_addr, name, version, api_modules, tls_enabled,
        max_peers, max_pending_peers, enable_status_service, enable_ntp_sync,
        bridge_enabled, wallet_enabled, local_notifications_enabled,
        browser_enabled, permissions_enabled, mailservers_enabled,
        swarm_enabled, mailserver_registry_address, web3provider_enabled, synthetic_id
    ) 

Having a valid config would allow us to avoid infinite crashes like #14643 when an invalid config was written to the database. Probably we should callnodeConfig.Validate in parseSaveAndSyncSetting in database.go

Steps to reproduce

Try adding the following test to node_config_test.go:

func TestConfigValidate(t *testing.T) {
	// GIVEN
	db, stop := setupTestDB(t)
	defer stop()

	tmpdir := t.TempDir()
	nodeConfig, err := params.NewNodeConfig(tmpdir, 1777)

	require.NoError(t, err)
	err = nodeConfig.Validate()
	require.NoError(t, err)
	require.NoError(t, nodecfg.SaveNodeConfig(db, nodeConfig))

	// WHEN
	dbNodeConfig, err := nodecfg.GetNodeConfigFromDB(db)
	require.NoError(t, err)

	// THEN
	err = dbNodeConfig.Validate()
	require.NoError(t, err)
}

it fails with

Error:      	Received unexpected error:
	Key: 'NodeConfig.KeycardPairingDataFile' Error:Field validation for 'KeycardPairingDataFile' failed on the 'required' tag

Expected behavior

Node Config in the database should be valid

Actual behavior

Required fields are missing