Replace Requests with requests-cache

[kayoMichael]

Since most of the Websites scrapped have strict rate limits, it might be better to replace all the requests library used in BaseDataScrapper and BaseDataSetScrapper to use requests-cache so that same api calls can be cached and therefore prevent time loss from rate limits after intial calls. It should use the sqlite (default) caching method for persistant storing of api responses so that moving forward refetching the data will be much faster.