[Audit Logging] Logger and factory APIs in C-Core and C++. (grpc#32750)

Audit logging APIs for both built-in loggers and third-party logger
implementations.

C++ uses using decls referring to C-Core APIs.

---------

Co-authored-by: rockspore <rockspore@users.noreply.github.com>

BUILD

@@ -220,6 +220,7 @@ GPR_PUBLIC_HDRS = [
 ]
 
 GRPC_PUBLIC_HDRS = [
+    "include/grpc/grpc_audit_logging.h",
     "include/grpc/byte_buffer.h",
     "include/grpc/byte_buffer_reader.h",
     "include/grpc/compression.h",
@@ -388,6 +389,7 @@ GRPCXX_PUBLIC_HDRS = [
     "include/grpcpp/impl/status.h",
     "include/grpcpp/impl/sync.h",
     "include/grpcpp/resource_quota.h",
+    "include/grpcpp/security/audit_logging.h",
     "include/grpcpp/security/auth_context.h",
     "include/grpcpp/security/auth_metadata_processor.h",
     "include/grpcpp/security/credentials.h",
@@ -790,6 +792,10 @@ grpc_cc_library(
 grpc_cc_library(
     name = "grpc_public_hdrs",
     hdrs = GRPC_PUBLIC_HDRS,
+    external_deps = [
+        "absl/status:statusor",
+        "absl/strings",
+    ],
     tags = [
         "avoid_dep",
         "nofixdeps",
@@ -1734,6 +1740,7 @@ grpc_cc_library(
         "//src/core:handshaker_factory",
         "//src/core:handshaker_registry",
         "//src/core:iomgr_fwd",
+        "//src/core:json",
         "//src/core:memory_quota",
         "//src/core:poll",
         "//src/core:ref_counted",
@@ -1886,6 +1893,7 @@ grpc_cc_library(
         "//src/core:error",
         "//src/core:gpr_atm",
         "//src/core:gpr_manual_constructor",
+        "//src/core:grpc_audit_logging",
         "//src/core:grpc_backend_metric_provider",
         "//src/core:grpc_service_config",
         "//src/core:grpc_transport_inproc",