Add oss-fuzz harness for SkColorSpace

I ran:
out/Clang/dm --match ColorSpace_Serialize

and uploaded the result of that to https://storage.googleapis.com/skia-fuzzer/oss-fuzz/skcolorspace_seed_corpus.zip

Note: this is not to be confused with skcms_Parse, which
is tested using the icc_profile_seed_corpus [1] [2]

See also: https://github.com/google/oss-fuzz/pull/11137

[1] https://github.com/skia-dev/oss-fuzz/blob/122bf7c6affb8a959ec369c5aacc23458c9d945e/projects/skcms/Dockerfile#L22
[2] https://skia.googlesource.com/skcms/+/main/fuzz/

Change-Id: Ib17e50e9d688694a7ed76a87d416a4f0331527fb
Bug: b/306020531
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/767976
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
4 files changed