add config to insert space for empty braces

[davidkwan95]

Fixes #28678
Add a new config insertSpaceAfterOpeningAndBeforeClosingEmptyBraces. For example:

Before formatting

constructor() {        }

When the config is set to true:

constructor() { }

When set to false:

constructor() {}

[msftclas]

All CLA requirements met.

[ghost]

Does this need a doc update as well?

[galangel]

can you merge this?

[andrewbranch]

Thanks for doing this! Looks reasonable to me. To be broadly useful, it needs a corresponding PR to the typescript-language-features extension in VS Code. You can use this one as a template.

It will also need some changes in Visual Studio for those users to take advantage of it, so pinging @jessetrinity for awareness.

[orta]

Yep, I'm good for this too - let's get this in.

Thanks @davidkwan95! As Andrew recommended, to make this useable you'll need to be able to set the config in your editor, so I'd head over to VSCode and add that and we'll make sure the VS team know.

[davidkwan95]

I'm a little bit busy this week and probably next week too, so maybe another person can help make a PR to the VSCode repo.