More features, minor bug fixes

[shubhampaithankar]

1. Improved Regex
   • Throughout my use, some job's exp criteria escaped through the regex. I found out some HRs like to put years as yrs
   • The new regex checks for that
2. Improved text extraction
   • Some bad words that I put such as "contractor" escaped cus the normally extracted description has leading and trailing white spaces
   • new function to polish the extracted text while also maintaining its structure
3. Check to unfollow company at the end
   • Added a check to unfollow company before submitting the application
   • Prevents clutter and unnecessary posts from popping up in the feed
4. Work style preference
   • Added a check to only apply to jobs that match your preference (remote | on-site | hybrid)
   • Empty field will ignore the checking