Added customizable columns to incus profile list

[amroKerkizz]

Implemented code to help add customizable columns. Issue for reference is #720.

[stgraber]

Did a quick review and fixes on this one, I had to do:

• Fix commit message to include sign-off and bug being closed
• Run gofmt -s -w ./ and notice that the code doesn't even compile...
• Fix the code (missing bracket at end of for loop)
• Run gofmt -s -w ./
• Fixed the default column layout in help message
• Ran make i18n to generate the needed translation commit
• Ran make static-analysis and fixed the issues it identified

I also picked up a small issue with the help message of the incus project list command which had been done earlier, so pushed a fix for that in this one too.