[Nearby Presence] Fetch and select correct local credentials

Fetch the local credentials and select the correct local credential by verifying the validity of the time. This CL will be followed by
using the selected local credential for authentication. See go/cros-nearby-presence-np-nc-authentication  for details.

PiperOrigin-RevId: 603772266

internal/platform/implementation/BUILD

@@ -93,6 +93,7 @@ cc_library(
         "//internal/network:__subpackages__",
         "//internal/platform:__pkg__",
         "//internal/platform/implementation:__subpackages__",
+        "//presence:__subpackages__",
         "//presence/implementation:__subpackages__",
     ],
     deps = [