* fuzz: Add OSS-Fuzz integration and multiple format-specific fuzzers
* fuzz: Add GLB fuzzer and fix null pointer issue
- Add null check for mFileExtensions in ForceFormat() to prevent
undefined behavior when the field is null
- Fix misleading comment in gltf fuzzer (only covers text format)
- Add separate GLB fuzzer for binary glTF format coverage
- Update OSS-Fuzz build script to include GLB fuzzer with corpus
* Add copyright and licensing information
Added licensing information and copyright notice to fuzzer_common.h
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Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>
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