Allow to open multiple editors in one group by tab multiselect

[ctf0]

currently am using this all the time with sublime ex.

which is very helpful when working with multiple files, so instead of reaching to the command palette, u just shift + click the tab u want to view side-by-side with the current opened editor.

i couldnt find an api to do this through an extension.

[bpasero]

Yes, thats cool. Related: #36700