Improve telecom logs for phone account selection.

1. Improve CREATE call event logging to include the requested phone
account handle.
2. Improve PhoneAccountRegistrar dumpsys to include the outgoing
phone account returned by TelecomManager#getOutdoingPHoneAccountForScheme
to make it more clear when a default will be used even if there is no
user chosen phone account handle.
3. Improve logging in the select phone account handle stages so that we
can more clearly see in the logs which phone account handles were
available and which was selected automatically.
4. Improve TelecomServiceImpl logging to set the calling package
abbreviation where a calling package was available.

Test: View logs while initiating calls.
Test: Run dumpsys to verify logs.
Bug: 188652528
Change-Id: Ia9c000f9fd6f92caa00818af9062148832d72aad