Add AVIF transform support

The main change is adding support for the mirroring (imir) and rotation (irot)
transformations. Additional changes include:

- Rename existing AvifItem → IsobmffItem since it isn't AVIF-specific
- Rename AvifImage → Mp4parseAvifImage (for consistency with the C API)
- Create AvifItem for more specific use cases
- Expose spatial_extents (i.e., size), image_rotation and image_mirror to C API
- Add newtypes for PropertyIndex and ItemId
- Store ipma with the nested structure it has in the file rather than
  flattening it; this facilitates validation (especially of transform ordering)
- Simplify mp4parse_avif_get_image to make it safer and eliminate the need for
  Mp4parseAvifImage to implement Default
- Add mp4parse_avif_get_image output to dump example
- Add AV1_AVIF_CORRUPT_IMAGES to skip bad upstream examples
 (see AOMediaCodec/av1-avif#150)
- Various testing improvements

Note this removes clap code because it's preferable to add that support all
together and this change is already big enough.

Author: baumanj

mp4parse/Cargo.toml

@@ -29,7 +29,7 @@ travis-ci = { repository = "https://github.com/mozilla/mp4parse-rust" }
 byteorder = "1.2.1"
 bitreader = { version = "0.3.2" }
 env_logger = "0.8"
-fallible_collections = { version = "0.3", features = ["std_io"] }
+fallible_collections = { version = "0.4", features = ["std_io"] }
 hashbrown = "0.9"
 num-traits = "0.2.14"
 log = "0.4"

mp4parse/src/boxes.rs

@@ -121,6 +121,7 @@ box_database!(
     ItemPropertyContainerBox          0x6970_636f, // "ipco"
     ItemPropertyAssociationBox        0x6970_6d61, // "ipma"
     ColorInformationBox               0x636f_6c72, // "colr"
+    ImageSpatialExtentsProperty       0x6973_7065, // "ispe"
     PixelInformationBox               0x7069_7869, // "pixi"
     AuxiliaryTypeProperty             0x6175_7843, // "auxC"
     CleanApertureBox                  0x636c_6170, // "clap"