Create list of previous SERP scraping resources

[janheinrichmerker]

The list should focus on differences and similarities as well as restrictions (e.g., API key required). Some tools and datasets to start with include (unordered):

• https://github.com/MarioVilas/googlesearch
• https://github.com/eliasdabbas/advertools (https://advertools.readthedocs.io/en/master/advertools.serp.html, https://www.dashboardom.com/google-serp)
• https://www.kaggle.com/eliasdabbas/datasets?search=engine
• https://developers.oxylabs.io/scraper-apis/serp-scraper-api
• https://serpapi.com/search-api
• https://help.zutrix.com/en/article/get-serp-results-1tvh8i0/
• https://app.zenserp.com/documentation
• https://serpstack.com/documentation
• https://github.com/dimitryzub/scrape-google-scholar-py
• https://github.com/gitronald/WebSearcher
• https://app.outscraper.com/api-docs
• https://github.com/theblackcat102/local-google-serp
• https://serp-spider.github.io/documentation/search-engine/google/

[janheinrichmerker]

The list could probably just be added to the readme.