Added compact display mode

[tcordina]

I added a new CLI argument: --compact-display. It does the following things:

• skips the rendering of the "title" and "main stats" sections
• skips the rendering of player lines only containing the "N/A" filler text
• double line breaks are turned into single line breaks

I primarily made this change in order to save a few pixels of screen real estate when displaying the output in a Vulkan overlay with vkdto.

Below are 2 screenshots showcasing the difference it makes in single-player (1920x1080)

Without --compact-display :

With --compact-display :

Note: It's my first time working with c++ so any suggestion to make this PR cleaner is welcome :)

[Emanem]

Hi the change looks very good, accepting the PR. Very good job!