i would like to create a new telegraf config from the UI and edit it

We have a way to create telegraf configurations in the UI today, but clicking the button opens a modal with just a few options:


Now that we can manually edit telegraf configs in the UI, we should give the user the option to create a new telegraf config without going through the modal.

### Acceptance Crit
as a user, i would like the ability to create a new telegraf configuration that i can edit manually
as a user, i would like to have the new telegraf config configured to write to my cloud instance already
as a user, i would like a way to customize the telegraf config before i save it

### Notes
- Telegraf has an option to generate a new config with the `telegraf config` command. That should match https://github.com/influxdata/telegraf/blob/master/etc/telegraf.conf
- By default, it has the `outputs.influxdb` configured, but in this case, we want the `outputs.influxdb_v2` configured and ready to go
- Related to https://github.com/influxdata/ui/issues/784
- I'm ok completely replacing the existing "create telegraf" experience in the app.