M3U Cleaner: Clean Channel Names, Remove Decoration and Broken Lines

Provider lists add country prefixes ('TR:', '┃TR┃'), decoration characters ('✦✦'), emoji and quality tags ('ᴴᴰ') to channel names; this hurts readability and makes EPG matching harder. The cleaner removes them with the real-list rules we use in the Göktürk IPTV app.