Add public error codes to Euicc public API

Adding public error codes to euicc public API, this will allows the user
to get an general idea of what went wrong when calling the Euicc APIs
Bug: 143107744
Test: atest EuiccService, atest EuiccManager

Change-Id: I427f17e8f28fa4a646a63299a1f63c4c5970a5a0
Merged-In: I427f17e8f28fa4a646a63299a1f63c4c5970a5a0
4 files changed