Migrate Markdown PDF, MD, TXT Export functionality to the Frontend

[devleejb]

What would you like to be added:
Currently, the Markdown PDF, MD, and TXT Export functionalities are implemented on the backend side. However, as we are migrating to Go for the backend, implementing these features on the Go side is becoming challenging. Given that there are many open-source tools available in the TypeScript environment, I propose moving the implementation of these export functionalities to the frontend.

Why is this needed:
This migration will allow for more flexibility and accessibility in utilizing TypeScript-based libraries for document export functionality, ensuring that we can continue to provide these features efficiently without the complications arising from the Go migration.

[Banal972]

If the issue hasn’t been resolved, I’d like to give it a try.

[krapie]

@Banal972 Currently we have closed the go backend migration initiatives #520.

But it will be nice to try out if we can perform this task on frontend, as the current backend implementation is not a good way to perform these kind of actions.

Will assign this issue if you are willing to give a try on this.

[Banal972]

@krapie Sure, I’ll output it on the frontend side.