arc: Reintroduce the output file option

-o argument was previously removed in favor of new api and consent
dialog but now it is being reintroduced to go along with limited mode
dumpstate logs that do not require user consent.

This argument is effective only during limited mode but we do not throw
an error if supplied with other arguemnts for backwards compatibility
reasons.

Bug: 142684959
Bug: 136273873
Bug: 139379357
Bug: 138805202
Bug: 142685922
Test: adb bugreport
Test: adb bugreport xyz.zip
Test: adb shell bugreport
Test: atest dumpstate_test
Test: flash android to dut, android-sh, setenforce 1, arc-bugreport
Change-Id: Ib2cadf13c101dd2e957033a7657a647d043f2b72