New Release for v2.0.0

Notable changes:

• Restructured and rewrote a significant portion of the project
• Fixed several longstanding bugs (timeouts, cancelling conversions etc)
• Added loader to show conversion in-progress
• Added support for animated telegram stickers
• Expanded format support for image/video types
• Integrated CI/CD
• Updated README and added a developer guide

Overall, this is a significant improvement from the initial release years ago :)