feat(frontend): implement parseListing parse helper in frontend/src/lib/contracts.ts

[TS-mfon]

closes #137

Summary of Work Done

1. Implemented parseListing Helper:

   • Added parseListing(rawData: Record<string, unknown>): MarketplaceListing in frontend/src/lib/contracts.ts to convert the raw scVal map returned by the marketplace contract into a typed MarketplaceListing interface object.
   • Handled BigInt conversions for id, bot_id, price, and listed_at fields using toBigInt().

2. Refactored Marketplace Listing Query Helpers:

   • Updated getActiveListings() and getUserListings() in frontend/src/lib/contracts.ts to utilize the new parseListing helper function.

3. Type Alias Support:

   • Added export type Listing = MarketplaceListing; in frontend/src/types/index.ts to support the Listing interface reference seamlessly.

4. Testing & Verification:

   • Added unit test suite in frontend/src/lib/contracts.test.ts covering parseListing, parseUserProfile, and parseBotNFT.
   • Verified with TypeScript type check (npm run type-check) and Jest test runner (npm test), all passing.

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[Ada-Girly881]

Please resolve conflict

[Ada-Girly881]

Please fix the conflict

[TS-mfon]

Owner
Sorry for the late response

[TS-mfon]

done