SDWebImage upstream upgrade

Feature

• Compatible for SDWebImage 5.0.0-beta2
• Supports custom scale factor in HEIF decoding
• Supports custom compression quality in HEIF encoding

0.1.1

Improvement

Upgrade libheif to 1.3.2 version, fix bug

Initial Realse

Feature

Support HEIF decoding for SDWebImage (using libde265 for HEVC codec)
Support HEIF encoding for SDWebImage (using libx265 for HEVC codec)