Integrate fuzz tests into OSS-Fuzz

[pellared]

Integrate with OSS-Fuzz.
References:

• https://opentelemetry.io/blog/2024/fuzzing-audit-results/
• https://google.github.io/oss-fuzz/getting-started/new-project-guide/go-lang/
• https://github.com/google/oss-fuzz/tree/master/projects/opentelemetry

Related issue:

• config: Add fuzz tests #6586