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: heif.dll or libheif.[dylib|so]
  For details, see https://github.com/strukturag/libheif/blob/v1.13.0/COPYING
  Source code: https://github.com/strukturag/libheif/tree/v1.13.0

Name: libde265
License: LGPLv3
Files: libde265.[dylib|so|dll]
  For details, see https://github.com/strukturag/libde265/blob/v1.0.8/COPYING
  Source code: https://github.com/strukturag/libde265
