split view organization

[GUARINOO]

add controls like rearrange, switch, unsplit and close individual tab in split to the UI itself and not just in the sidebar since it's often hidden (in compact mode) when splitting

combine the tab labels on the sidebar so it's not confusing which tabs are together and which aren't

example if I have 2 tabs open one with git hub and one with Google instead of appearing as
github
Google

it should be

git hub/Google

until they are unsplit or one is closed

[TheTrueWhiteOwl]

A lot of these have been added, the ones I would still like to see are a swap button when you hover in the middle of a split, a better "Unsplit this tab button" (the current button simply looks like a minimise button and a "Close tab" button.