Convenient way to change tabulation style(hard_tabs on/off).

[Motorenger]

Right now I'm working on Python(either tab or space tabulation) and C(space tabulation) projects. And every time I switch between projects that have different tabulation style I need to go into the settings.json and enable/disable the hard_tabs option to use tab/spaces for tabulation, which is very inconvenient. If there no solution yet, I propose to add another setting, which when enabled will allow Zed to decide the tabulation by itself depending on the file style. Even though it won't work for new/empty files, but at least once you started work, Zed then will catch up.