Support auto-formatting syntax

[tameeshB]

It would be nice to have a feature where, if enabled, the saved file/s would have formatting.
For example, json formatting, traceback formatting and auto-formatting any code that is pasted.

How I imagine this could be implemented would be by adding a checkbox to the form (check to auto-format) and in the backend, we format the contents before saving it as a file.

[chriskuehl]

I think this would be really useful. My main concern is that people often paste snippets of text that don't necessarily have correct syntax (or the correctly-identified language) and these may format in really poor ways depending on the implementation. If there was a way for users to see the formatted text before submitting that might help the UX a lot (for example, if the formatting was done client-side with a button click prior to submission).

[tameeshB]

My idea was to let the user pasting the text decide if they want to format it using a checkbox on the form. This way, if they know that they are pasting something poorly indented/formatted like a raw JSON, the shared version would be formatted.