chore: add getTrendingTokens wrapper

[sahar-fehri]

Explanation

Creates a new function to fetch trending tokens.

The function accepts an array of CAIP chainIds along with other optional filtering query params.

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

---

Note

Adds getTrendingTokens to fetch multi-chain trending tokens with optional filters, and exports new SortTrendingBy/TrendingAsset types.

• Token service (src/token-service.ts):
  • Implement getTrendingTokens to fetch trending tokens across CAIP chainIds with optional filters (sortBy, liquidity, 24h volume, market cap).
  • Add getTrendingTokensURL helper.
  • Introduce types SortTrendingBy and TrendingAsset.
• Exports (src/index.ts):
  • Export getTrendingTokens and types SortTrendingBy, TrendingAsset.
• Tests (src/token-service.test.ts):
  • Add coverage for getTrendingTokens success, empty inputs, non-array and error responses.
• Docs/Changelog:
  • Update CHANGELOG.md under Unreleased with new API and types.

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[cryptodev-2s]

LGTM!

[sahar-fehri]

@metamaskbot publish-preview