[tsan] Add environment variable TSAN_SYMBOLIZER_PATH as we do in other sanitizers

ASan, LSan, MSan and UBSan all allow to use environment variable `*SAN_SYMBOLIZER_PATH` to pass the symbolizer path, this patch add `TSAN_SYMBOLIZER_PATH` to TSan.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D108911