Add lint-baseline.txt files for test base/runner/mock

In preparation for enabling API lint checking on java_sdk_library
adds lint-baseline.txt containing all the existing issues for these
APIs.

The test-base and test-runner APIs are old and have been deprecated
so there is little benefit in fixing those issues.

The test-mock API while old has not been deprecated and so should be
cleaned up. Bug 156175891 tracks that cleanup work.

Bug: 156126315
Bug: 156175891
Test: m checkapi
Change-Id: Ifb4669fcf7f2a36e5cb4d593bfc5d03330901ee9