Add Support for Saving Collections as OpenAPI Files

[Drew-Chase]

I have checked the following:

• [X] I've searched existing issues and found nothing related to my issue.

Describe the feature you want to add

Description

It would be incredibly beneficial to have an option to save API collections directly in OpenAPI format, either as an alternative to or alongside the current .bru files. This feature would streamline workflows for users whose IDEs support OpenAPI by allowing auto-loading and integration of the OpenAPI file into IDE features like autocomplete.

Motivation

Currently, using .bru files requires additional steps to export and delete the OpenAPI file each time changes are made. Adding OpenAPI support would simplify updates, improve productivity, and reduce time spent on repetitive exporting tasks, making Bruno more versatile for users working with OpenAPI-compatible tools.

Thank you for considering this feature request.

Mockups or Images of the feature

Proposed Solution

• Add an option to save the collection directly in OpenAPI format.
• Enable users to choose between .bru and OpenAPI file formats when saving collections.
• Ensure saved OpenAPI files are updated automatically alongside .bru files when changes are made.