Russian adjectives and their common forms

[OmarAI2003]

Contributor checklist

• This pull request is on a separate branch and not the main branch
• I have tested my code with the pytest command as directed in the testing section of the contributing guide

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Description

This PR adds a SPARQL file to extract Russian adjectives. Currently, the Russian directory supports extracting nouns, verbs, adverbs, prepositions, emoji_keywords and now and adjectives.

[github-actions]

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[OmarAI2003]

I made sure to incorporate the feedback you provided in the last PR.let me know if there's anything that needs improvement.

[andrewtavis]

There still seem to be a lot of forms that are not included here, @OmarAI2003. Do you want to add them in, or should I look into it?

[OmarAI2003]

No, I can add them, but how many more forms do you think this file can accommodate?

[andrewtavis]

We can split the file if need be later, @OmarAI2003. Thanks!

[andrewtavis]

We're getting two entries per adjective, but this is fine for now, @OmarAI2003 :) Hopefully we'll write a test at some point that will help us derive what's up here 😊