Split DLC versions into two for each base game version

[jemarq04]

Change description

This is a follow-up PR to my Sword/Shield encounter PRs. I renamed the-isle-of-armor and the-crown-tundra to the-isle-of-armor-sword and the-crown-tundra-sword and added corresponding versions for Shield. Similarly, the-teal-mask and the-indigo-disk were split for Scarlet/Violet. Version names were updated and encounters added from #1564 for in-game trades and gifts from DLC were updated to link to DLC versions instead of Sword/Shield.

AI coding assistance disclosure

No AI used.

Contributor check list

• I have written a description of the contribution and explained its motivation.
• I have written tests for my code changes (if applicable).
• I have read and understood the AI Assisted Contribution guidelines.
• I will own this change in production, and I am prepared to fix any bugs caused by my code change.

[Naramsim]

Merging thanks!

[pokeapi-machine-user]

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