Add public API for EuiccService log dump

Add public APi to EuiccService which allows the connected LPA to dump
out the logs when a bug report is triggered.
Bug: 62881779
Test: manually tested by extracting bug report to see if the logs are
present and atest EuiccServiceTest

Change-Id: I0869b95d12ab87a5e2a255015549191040d9daa7