docs: [gacha] add hidden Gacha v2 API docs - #950

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Fetched 22 OpenApi file(s):
  - openapi-spec/content/content.yaml
  - openapi-spec/gacha/gacha.yaml
  - openapi-spec/lend/borrow.yaml
  - openapi-spec/lend/lend.yaml
  - openapi-spec/portfolio/portfolio.yaml
  - openapi-spec/portfolio/v2/portfolio.yaml
  - openapi-spec/prediction/prediction.yaml
  - openapi-spec/price/v2/price.yaml
  - openapi-spec/price/v3/price.yaml
  - openapi-spec/recurring/recurring.yaml
  - openapi-spec/send/send.yaml
  - openapi-spec/studio/studio.yaml
  - openapi-spec/swap/v1/swap.yaml
  - openapi-spec/swap/v2/jupiterz.yaml
  - openapi-spec/swap/v2/swap.yaml
  - openapi-spec/tokens/v1/tokens.yaml
  - openapi-spec/tokens/v2/tokens.yaml
  - openapi-spec/tokens/v2/verification.yaml
  - openapi-spec/transaction/transaction.yaml
  - openapi-spec/trigger/v1/trigger.yaml
  - openapi-spec/trigger/v2/trigger.yaml
  - openapi-spec/ultra/ultra.yaml
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