feat(linkedin): add company LinkedIn ID to job posts

[Ni-co-la-s]

Summary

Adds company_linkedin_id to the retrieved fields when linkedin_fetch_description==True.

Linkedin company ids can already be used for filtering in linkedin search, but there is no easy way to retrieve them. You have to look up the company page manually (or use an external dataset but only ones I could find are pretty old).

So I think being able to retrieve the company ids while scraping would make it easier to reuse them later on for future searches.

Changes

• jobspy/linkedin/init.py : Retrieved company_linkedin_id from the job detail page using the meta tag "companyId"
• jobspy/model.py and jobspy/util.py: Added new field to the JobPost model and the output order df
• README.md: Added new field info

Testing

• I have tested it locally with about 1000 jobs parsed over the past days
• To test quickly, you can use the script

from jobspy import scrape_jobs

df=scrape_jobs(site_name='linkedin', search_term='software engineer', location='United States', results_wanted=10, linkedin_fetch_description=True)

print(df[['title','company','company_linkedin_id','job_url']].to_string(index=False))

Output at the time of the PR:

Title	Company	Company LinkedIn ID	Job URL
Software Engineer	Nuvo	82490513	https://www.linkedin.com/jobs/view/4378357766
Software Engineer	Chalk	78829224	https://www.linkedin.com/jobs/view/4406548495
Software Developer	Weekday (YC W21)	69656080	https://www.linkedin.com/jobs/view/4432097763
Software Engineer (All Levels)	Blossom	104568728	https://www.linkedin.com/jobs/view/4432033379
Software Engineer	Yext	515401	https://www.linkedin.com/jobs/view/4081518713
Software Engineer	Rilla	11745039	https://www.linkedin.com/jobs/view/4427404272
Software Engineer	Oso	13056430	https://www.linkedin.com/jobs/view/4363726700
Software Engineer	Candid Health	70448411	https://www.linkedin.com/jobs/view/4339199299
Software Engineer	Moab	100925956	https://www.linkedin.com/jobs/view/4318517031
Software Engineer	Voltai	99344719	https://www.linkedin.com/jobs/view/4318514364