Added LSTM and ARIMA

[sanskritiagr]

Related Issue

Prediction was not good enough and also code had some errors. Its working fine now.

Description

I have added lstm and arima. I have also made some changes in prophet code because it had some errors. However, it is working fine now.

Type of PR

• Bug fix
• Feature enhancement- Yes
• Documentation update
• Other (specify): _______________

Checklist:

• I have performed a self-review of my code
• I have read and followed the Contribution Guidelines.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have commented my code, particularly in hard-to-understand areas.

Additional context:

[Include any additional information or context that might be helpful for reviewers.]

[github-actions]

Welcome to Our repository.🎊 Thank you so much for taking the time to point this out.

[sanskritiagr]

Please add it on GsSoc'24. It is regards with the issue I raised which was assigned to me. Please close that as well after accpeting.