Added libde265 + some new functions + support HEIF decode

Author: awxkee

README.md

@@ -1,4 +1,7 @@
-# AVIF/HEIF Coder for Android 24+
+# AVIF/HEIF Coder for Android 26+
+
+Library provides simple interface to decode or encode ( create ) AVIF and HEIF images for Android 26+.
+Based on libheif, libde265, libx265, libyuv and libaom
 
 # Usage example
 
@@ -17,4 +20,8 @@ val isImageSupported = HeifCoder().isSupportedImage(byteArray)
 
 ```groovy
 implementation 'com.github.awxkee:avif-coder:1.0.9' // or any version above picker from release tags
-```
+```
+
+# Disclaimer
+## AVIF
+AVIF is the next step in image optimization based on the AV1 video codec. It is standardized by the Alliance for Open Media. AVIF offers more compression gains than other image formats such as JPEG and WebP. Our and other studies have shown that, depending on the content, encoding settings, and quality target, you can save up to 50% versus JPEG or 20% versus WebP images. The advanced image encoding feature of AVIF brings codec and container support for HDR and wide color gamut images, film grain synthesis, and progressive decoding. AVIF support has improved significantly since Chrome M85 implemented AVIF support last summer.