ASCII-text-only status column

New optional column displaying container status using plain text characters (sans symbols/icons)

As suggested by @Brayyy in https://github.com/bcicen/ctop/issues/293#issuecomment-1183918016:

State:

• created: "C" (white)
• running: "R" (green)
• exited: "e" or "x" (gray)
• paused: "p" (blue)

Health:

• healthy: "H" (green)
• unhealthy: "U" or "!" (red)
• starting: "s" (gray)

Hey, I have an interest in developing this feature, but I have never used Golang, so you can help me with the path to do this. How to commit to this project, files to change, and pre-requisites needed.

This is my first attempt to contribute to an open-source project.

I have already given a look at the project and understand a little how this works.