fix: suppress dlt_shm.c missing-prototypes warning from score_itf

Author: RSingh1511

.bazelrc

@@ -42,6 +42,7 @@ common --//score/datarouter/build_configuration_flags:use_local_vlan=True
 # ignored-attributes warnings (string_comparison_adaptor.h, text_format.h, etc.)
 build --copt=-Wno-deprecated-declarations
 build --copt=-Wno-ignored-attributes
+build --per_file_copt=external/score_itf++_repo_rules+dlt_daemon/src/shared/dlt_shm\.c@-Wno-missing-prototypes
 
 # Base QNX config (shared flags)
 common:qnx --credential_helper=*.qnx.com=%workspace%/scripts/internal/qnx_creds.py