Imporovements: Multi-Filter handling

[iABn0rma1]

Description

This update optimises the working of Steam scraper by combining the filtering steps, and introducing error handling. This fixes issues where you might get repeated or undesirable results.

Resolves: [ #1006 ]

Checklist

Before submitting this pull request, kindly verify that the ensuing checkpoints have been reached.

• Have you adhered to the repository's defined coding convention rules?
• Have you updated the 'documentation.md' file with the method/function documentation?
• Have you sent a message along with the result or response?
• Have you used the try-catch technique?
• Has the method/class been added to the documentation (md file)?

Screenshots

• Added _construct_filter_url to scrape multiple filters at once
  

• Updated the results tags as there weren't any listings that matched both 'F2P' and 'Discounts'

• Tested for 500 games with Discounts, Games and Windows, MacOS tags

Additional Notes/Comments

Any additional remarks or suggestions concerning this pull request are welcome.

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I certify that I have carried out the relevant checks and provided the requisite screenshot for validation by submitting this pull request.
I appreciate your contribution.

[nikhil25803]

Great work @iABn0rma1 !!
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