Renamed the root folder and added x265/4k info

Renamed the root folder and added x265/4k info

Misc/x265-4k.md

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+### Why Not x265
+
+Then the question why I put `/(x|h)\.?265/i` as `Must Not Contain`.
+Luckily someone else on Discord described it nice and correctly in my opinion.
+
+```
+x265 is good for 4k remuxes.
+If the media isn't source quality/remux, then there will be a loss of quality every time.
+Also, once you go x265, typically that file is done.
+It can't be changed to something else without a huge loss of quality.
+
+Something like 95% of video files are x264 and have much better direct play support.
+If you have more than a couple users,
+you will notice much more transcoding.
+Just depends on your priorities.
+
+So basically if you are storage poor and just need to save space, use x265.
+The catch is if you want best quality x265, you need source quality files, so you still have huge file sizes.
+If you want maximum compatibility and the option to change your files to something else later,
+then x264.
+It's all really dependent on specific situations for different people
+```
+#### Some extra info about 4K/X265
+> Source: Plex, [4k, transcoding, and you - aka the rules of 4k - a FAQ](https://forums.plex.tv/t/plex-4k-transcoding-and-you-aka-the-rules-of-4k-a-faq/378203)
+> 1. Don’t bother transcoding 4k
+> 2. If you cannot direct play 4k, then perhaps you should not even be collecting 4k.
+> 3. If you don’t have the storage space for a copy of both 4k and 1080/720, then perhaps you should not even be collecting 4k.
+> 4. To avoid transcoding for remote and non-4k clients, keep your 4k content in separate plex libraries.
+> 5. This may of course mean that you keep a 4k copy and a 1080/720 copy, but if you are collecting 4k content then you should not be worried about storage space, should you?