Change indentation

[Netail]

Hi team Beachball,
Would it be possible to change the JSON indentation?
Currently the indentation is set to 2 spaces

beachball/src/bump/performBump.ts

Line 40 in 6025c6d

fs.writeJSONSync(info.packageJsonPath, packageJson, { spaces: 2 });

but wouldn't be nice to make this an option to e.g. change to 4. Maybe a dynamic indentation; use current indentation if file exists else use root package.json indentation

Context: We use 4 spaces within our company and beachball resets the CHANGELOG.json & package.json formatting to 2 spaces and then our formatters change it to 4 again. And it goes back-and-forth like that :(

[Netail]

@kenotron @ecraig12345 What you guys think of the related pull request? Something like 'auto' could be added in the future?

[Netail]

Moved back to changeset