Fixed PTC and Cargill scraper

[lalalaurentiu]

This pull request updates the job scraping logic for the sites/ptc.py and sites/cargill.py scripts to improve data accuracy and compatibility with changes in the external API. The most important changes include switching to a new jobs API endpoint for PTC, updating the data extraction logic to match the new API response format, and standardizing the location fields for jobs in Bucharest.

PTC API integration and data extraction updates:

• Switched the jobs API endpoint in sites/ptc.py to https://ptc.eightfold.ai/api/pcsx/search, which supports new filtering options and returns job data in a different structure.
• Updated the logic for calculating the number of pages and extracting job positions to match the new API response format, specifically accessing job data from the nested data field.

Location data standardization:

• Standardized the city and county fields for PTC jobs to always be "Bucuresti", ensuring consistency in location reporting.
• Added a hardcoded "country": "Romania" field to each job entry in both sites/ptc.py and sites/cargill.py to ensure country information is always present. [1] [2]