When I'm working with lets say 4 files, all are open in tabs(VIM). I want to save the changes and compile it without having to close the tabs, i.e I want to open a terminal in new tab along with the existing 4?
How should I do this in VIM?
Vim 8.1 now has a built in terminal that can be opened with the :term command. This provides much more complete integration with the rest of the Vim features.
Original Answer:
I would suggest looking at tmux or screen. I use tmux myself and along with vim-tmux-navigator moving between the terminal and vim is very easy.