Word Cloud + Multi Language Support

[BasicallyOk]

What does this PR do?

Added backend functionality to calculate the top k most important words in the chat. Added backend api for the feature. Multi-Language support is also added.

Github Issue Number

Resolves: Resolves #30

Relates to: Part of #7 (specifically the word cloud portion), #40

Author checklist

If any of these points have yet to be satisfied, make sure that you set the title to the format DRAFT #issue-num Title

• [x] The title is short and descriptive of the PR. Must start with the Github Issue Number (format: #issue-num Title).
• [x] The description follows proper cl description practices and mentions related Github Issues (make sure this is the first thing you mention).
• [x] Branch has merged in the latest version of main
• [ ] Linting has occured, as per the project linting config
• [x] All changed functions have proper docstring/wiki updates (front-end team) to describe what they do and how to use them.
• [x] Add yourself as the assignee.
• [x] Add reviewer a reviewer and let them know on discord.
• [x] Ensure that all relevant ticket has been linked to the PR

Reviewer checklist

• [x] Relevant issue is mentioned in description
• [x] Code solves the issue
• [x] Code follows the specification
• [x] Code is the best solution for the issue
• [x] Branch is ahead of main
• [x] Ensures the fix/feature works locally

[mustafa-tariqk]

Please lint, I setup a vscode task that does this automatically. Also got autopep8 stuff in there