AVIF and HEIC support

[majorsilence]

Both AVIF and HEIC use HEIF container format. AVIF is AV1 in HEIF and HEIC is HEVC in HEIF.

This project mainly uses imagesharp for image processing and image sharp does not currently support avif and heic. For avif and heic investigate the use of libheif-sharp and integrate it into the TownSuite.Web.ImageGen project. This is an exploratory issue to see if it is feasible and straightforward to implement.

https://github.com/0xC0000054/libheif-sharp
https://github.com/0xC0000054/libheif-sharp-samples

• if libheif-sharp does not embed libheif, modify the dockerfile to include libheif

modify or create new objects

• https://github.com/TownSuite/TownSuite.Web.ImageGen/blob/main/TownSuite.Web.ImageGen/GeneratePlaceholderImageRepo.cs
• https://github.com/TownSuite/TownSuite.Web.ImageGen/blob/main/TownSuite.Web.ImageGen/ImageProxyRepo.cs
• https://github.com/TownSuite/TownSuite.Web.ImageGen/blob/main/TownSuite.Web.ImageGen/GenerateIdenticonImageRepo.cs