zp: warn for bad chars

[Fabian42]

• green warn if not ^[a-z][a-z0-9\_\-]*(\.[a-z0-9\_\-]{1,5})?$
• yellow warn if -P ".*[^\\p{L}\\d \\.\\/\\_\\@\\+\\=\\,\\#\\&\\~\\(\\)\\[\\]\\{\\}\\%\\:\\;<\\=>\\?\\^\\|\\-].*" or ^\\-.+
• red warn if any of !"'$*\ or backtick or invalid Unicode characters (e.g. ) included

Found in filenames: !"$¡¢£¤¨«¬¯°±¶·¸»¼½¾¿×˝́̈–—‘’“”„…⁘₂€™⅛⅜⅝⅞←↑→↓⌈⌉─│┌┘⚡✅⬜⭐、「🆘🦈©√♥✉✰」【】𝐍𝐔𝐛𝐜𝐞𝐢𝐧𝐨𝐫𝐬𝐮𝐰🌍🌎🌞🍆🎶👉💬｜😂😄😱😻🤔＆  ​‌ and backtick