Tuner VTS: Pair Audio and Video Filters

This CL enforces the invariant that vendors provide audio and video
filters in pairs to the Tuner Hal VTS. Thus, the number of each must be
equal. If they do not, the tests are not
ran, and the test suite exits.

Additionally, this CL enforces the assupmtion that vendors will pair
their audio and video filters in the order they are provided, and it
treats the audioFilterIds and videoFilterIds vectors as 2 parallel
structures, where members at the same indicies correspond to a pair.
This is how media filter pairs are chosen when configuring them in the
VTS testing combinations.

Bug: b/182519645

Test: vts-tradefed run vts --module VtsHalTvTunerTargetTest. Manual
    tests with different input configuration files.
Change-Id: I74cc059ed610bb08d0929f250f252a16c9f954a8