docs: Add CodeSailer tutorials

docs/tutorials.md

@@ -19,8 +19,16 @@
 
 ## Blogposts
 
+### mfkl
+
 You can find several blog post about LibVLCSharp on my blog at https://mfkl.github.io/
 
+### CodeSailer
+
+- https://codesailer.com/tutorials/simple_video_player/
+
+- https://codesailer.com/tutorials/simple_recorder/
+
 ## Samples
 
 Various samples ready to run on multiple platforms available at https://code.videolan.org/mfkl/libvlcsharp-samples