License for "pi-heif" binary wheels: LGPLv3, due to base library licenses.

Binary wheels combine several license-compatible libraries. Here they are listed.

Name: libheif
License: LGPLv3
Files: libheif.[dylib|so|dll]
  For details, see https://github.com/strukturag/libheif/tree/v1.18.1/COPYING
  Source code: https://github.com/strukturag/libheif/tree/v1.18.1

Name: libde265
License: LGPLv3
Files: libde265.[dylib|so|dll]
  For details, see https://github.com/strukturag/libde265/tree/v1.0.15/COPYING
  Source code: https://github.com/strukturag/libde265/tree/v1.0.15