Fixed caching logic to fetch all the necessary data

[Oleksandr37]

This PR updates the cacheResources function to improve the completeness and reliability of the resource caching process.

In addition to fetching the main resource lists (e.g., /people, /starships), the function now follows and caches each item's url to retrieve detailed data for every entry.

[anzhhm]

Thanks! Now I'll have to redo my conclusions in lab work!