add caching to QF rounds and mainCategories query

Walkthrough

The recent changes introduce caching mechanisms to the CategoryResolver and qfRoundRepository to enhance performance by reducing redundant data retrieval. Additionally, a test update ensures that main categories and their active subcategories are correctly fetched and validated. A minor comment correction was made in the configuration file.

Changes

File	Change Summary
src/resolvers/categoryResolver.ts	Added caching for `mainCategories` in the `CategoryResolver` class.
src/repositories/qfRoundRepository.ts	Renamed `findAllQfRounds` to `findQfRounds` and added caching for active rounds.
src/resolvers/categoryResolver.test.ts	Updated tests to query and assert main categories and their active subcategories using `MainCategory`.
src/config.ts	Corrected a comment typo from "I thinks it's" to "I think it's".

Sequence Diagram(s) (Beta)

sequenceDiagram
    participant Client
    participant CategoryResolver
    participant Cache
    participant Database

    Client->>CategoryResolver: Request main categories
    CategoryResolver->>Cache: Check for cached main categories
    alt Cache hit
        Cache-->>CategoryResolver: Return cached categories
    else Cache miss
        CategoryResolver->>Database: Query main categories
        Database-->>CategoryResolver: Return main categories
        CategoryResolver->>Cache: Cache main categories
    end
    CategoryResolver-->>Client: Return main categories

Poem

In the land of code, a change so bright,
Caches now keep our queries light.
Categories swift, rounds in a breeze,
Tests ensure all works with ease.
A typo fixed, a comment clear,
Our code refined, let's give a cheer! 🎉

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Giveth / impact-graph