Check for > 6 Pkmn and Duplicates in Replay Parsing

[kelvinkoon]

Describe the issue
Currently, the pipeline for writing to DDB breaks due to this replay: https://replay.pokemonshowdown.com/gen9ou-1886092778
The duplicates Arceus causes an error, but the main issue is the pipeline does not check for duplicates and extreme cases where there are > 6 Pkmn.

Acceptance Criteria

• Check for duplicates
• Enforce > 6 Pkmn teams
• Deployed to Prod