`tiup playground scale-out` should support the `--ticdc.config` and `--kvcdc.config` flags

Feature Request

Is your feature request related to a problem? Please describe:

$ tiup playground scale-out --ticdc 1 --ticdc.config new-arch-cdc.toml 
Error: unknown flag: --ticdc.config

Describe the feature you'd like:

Support --ticdc.config (and --kvcdc.config). All other components have a config flag in the scale-out subcommand, so these are likely an oversight.

$ tiup playground scale-out --help | grep config
      --db.config string            TiDB instance configuration file
      --dm-master.config string     DM-master instance configuration file
      --dm-worker.config string     DM-worker instance configuration file
      --drainer.config string       Drainer instance configuration file
      --kv.config string            TiKV instance configuration file
      --pd.config string            PD instance configuration file
      --pump.config string          Pump instance configuration file
      --scheduling.config string    Scheduling instance configuration file
      --tiflash.config string       TiFlash instance configuration file
      --tiproxy.config string       TiProxy instance configuration file
      --tso.config string           TSO instance configuration file

Why the feature is needed:

Obvious.

Describe alternatives you've considered:

None.

Teachability, Documentation, Adoption, Migration Strategy:

Trivial.

Start at the tiup playground scale-out command and inspect how the existing component .config flags are defined and passed through. Add equivalent support for --ticdc.config and --kvcdc.config, then verify that scale-out --help lists both flags and that the example command no longer reports an unknown flag.