Add tidy_disabled_srcs property.

Used as a supplement to C/C++ srcs to disable
clang-tidy for selected srcs, when a library
contains many files in srcs and only some of them
are too large to compile with clang-tidy.

Test: WITH_TIDY=1 TIDY_TIMEOUT=90 make tidy-soong
Bug: 198098397
Change-Id: Ib32eb0e46ddbc717999797717bfd8c57e182ee88