feat: add scraping functionality for conferences and update routes

[JuanPabloDiaz]

#110

This pull request introduces a new feature for scraping conference details from a provided URL. The changes include adding a new endpoint, implementing the scraping logic, and updating the routes to support the feature.

API Enhancements:

• Added a new scrape action in Api::ConferencesController to handle requests for scraping conference details from a URL. The action validates the presence of the URL, calls the scraper service, and returns the result or an error message. (app/controllers/api/conferences_controller.rb, app/controllers/api/conferences_controller.rbR2-R20)

Service Implementation:

• Introduced a ScraperService in the ConferenceScraper module that uses Nokogiri and open-uri to scrape conference details (title, date, location) from the provided URL. The service includes basic error handling and customizable selectors for extracting data. (app/services/conference/scraper_service.rb, app/services/conference/scraper_service.rbR1-R24)

Route Updates:

• Added a new POST /conferences/scrape route to the conferences resource for invoking the scrape functionality. (config/routes.rb, config/routes.rbR22)

[JuanPabloDiaz]

Status Update: The endpoint is working as expected. Example response for:
curl -X POST http://localhost:3000/api/conferences/scrape -H 'Content-Type: application/json' -d '{"url": "https://www.rubyconf.org/"}'

Response:

{
  "title": "RubyConf 2024 – Chicago, IL – November 13–15, 2024: Sign-up to learn when more information about RubyConf is available!",
  "date": null,
  "location": "Location\n    Hilton Chicago Downtown\n    Hilton Chicago boasts a convenient central location on South Michigan Avenue, overlooking Grant Park and Lake Michigan. With many sights and attractions within a short walk from the hotel, it’s the perfect base for your stay in Chicago.\n    Book your room at the Hilton Chicago at the conference rate $219.00 per night (+tax and fees) by 11:59 PM CST on October 18th, 2024.\n    \n      \n  Book Your Room"
}

[nimzco]

Given the example you're giving, wouldn't you want something more parsed and robust?