fix(sl): stage test resources in build dir; read via TOSA_TESTDATA_DIR
- Copy
/test/examples/*and/schema/tosa.fbsinto the build tree at build time. - Define and use
TOSA_TESTDATA_DIRin tests, so test resources are loaded from the build tree. - CI already archives
BUILD_DIRand no longer depend on runner-specific workspace paths.
Signed-off-by: Yuvaraj Venkatesh yuvaraj.venkatesh@arm.com