feat: add ratelimit to every endpoint to prevent ddos.

[Mr-Sunglasses]

Fixes

Fixes #67 by @Utkarsh4517
Fixes #69 by @Mr-Sunglasses

Description

Fix ddos attack possible sitedown, by applying ratelimiting to every endpoint.

Technical details

Tests

Screenshots

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

[github-actions]

Sarthi Deployment Status f0ce162ec68d20f0🤖
Deleted ephemeral / preview environment for https://github.com/Mr-Sunglasses/paste.py.git/feat/ratelimitallendpoints