Update main.py

[HoneyHabib]

Previously the action failed on unsupported languages.
This change adds a fallback so submissions are still synced instead of crashing the workflow.
Added new languages (Python, JavaScript and Java ) support

[HoneyHabib]

Hi @dos-m0nk3y 👋

I created this PR to update the GitHub Action.
I ran into an issue while using it to sync LeetCode submissions where it failed for JavaScript submissions. I forked it for my own use and ended up adding support for three languages, along with a fallback so the workflow doesn’t crash.

Thought this might be helpful, so sharing it here.
Let me know what you think, happy to tweak anything 👍

Thanks!