compliance package: dumpresolutions

package to read, consume, and analyze license metadata and dependency
graph.

Includes the below command-line tool:

dumpresolutions outputs the resulting set of resolutions after the
bottom-up and top-down resolves, or after joining 1 or more condition
walks.

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all
Test: m systemlicense
Test: m dumpgraph; out/soong/host/linux-x86/dumpgraph ...
Test: m dumpresolutions; out/soong/host/linux-x86/dumpresolutions ...

where ... is the path to the .meta_lic file for the system image. In my
case if

$ export PRODUCT=$(realpath $ANDROID_PRODUCT_OUT --relative-to=$PWD)

... can be expressed as:

${PRODUCT}/gen/META/lic_intermediates/${PRODUCT}/system.img.meta_lic

Change-Id: I9869400126cd7ad4b7376b0bab31b46aad732f5d