Pretty print exported workspaces to make reviewing changes easier.

When a workspace is exported to a file the JSON is all placed on one long line in the file. I'm trying to foster adoption of Insomnia workspaces across my team by maintaining a repository of workspaces in Git. The current format of the exported files makes it hard for me and my colleagues to review changes to a workspace when a merge request is opened for it. I'm using the Insomnia v4 export format. I'm not sure if this is applicable to all of the other supported formats. It would be good if the exported JSON was automatically pretty printed. I can't see a good reason to preserve the existing single line behaviour. The alternative for me is to manually pretty print the document before pushing to Git, but that has to be done every time a developer changes a workspace and submits it to be merged. Version: Insomnia Core 2020.4.1 Release date: 22/09/2020 OS: Linux x64 4.15.0-118-generic Electron: 9.1.1 Node: 12.14.1 V8: 8.3.110.13-electron.0 Architect…