Customizing tmux and making it less dreadful

Summary

I have been exploring some new tools here and there. When I started watching Primeagen, I took a note of several tools that he was using and advocating for. One of them was tmux.What is tmux?#tmux is a terminal multiplexer. What that means is you can have many terminals in one. According to tmux wiki:tmux is a program which runs in a terminal and allows multiple other terminal programs to be run inside it. Each program inside tmux gets its own terminal managed by tmux, which can be accessed from the single terminal where tmux is running - this called multiplexing and tmux is a terminal multiplexer.tmux goes further by allowing you to have a lot of control over how the terminals are displayed, how they function, and how are they styled. You can have many separate windows as tabs. You can have many panes within one window. Are you working on several different projects? Then why don’t you have multiple sessions - each of them containing sets of windows and panes - all giving you access to multiple terminals. With a tool like this you no longer need to arrange multiple terminal instance windows on your desktop or using multiple workspaces for those instances - you can have it all in one place.One additional feature that tmux boasts in is the ability to retain the terminal session upon its closure. Imagine that you have a long running process like a local server or a persistent connection like ssh session. If you were to close that window, you would lose that session and the process that was in it. Tmux has the ability to detach and attach to multiple sessions making them easier to manage and not to worry about losing it.tmux wiki goes into detail talking about several other features of tmux:The main uses of tmux are to:Protect running programs on a remote server from connection drops by running them inside tmux.Allow programs running on a remote server to be accessed from multiple different local computers.Work with multiple programs and shells together in one terminal,...