compliance package documentation

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all
Test: m systemlicense
Test: m listshare; out/soong/host/linux-x86/bin/listshare ...
Test: m checkshare; out/soong/host/linux-x86/bin/checkshare ...
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: I5d48eababce7bba39795d3668eee86b332cbe43d
diff --git a/tools/compliance/Android.bp b/tools/compliance/Android.bp
index ee4a102..afb3080 100644
--- a/tools/compliance/Android.bp
+++ b/tools/compliance/Android.bp
@@ -51,6 +51,7 @@
         "actionset.go",
         "condition.go",
         "conditionset.go",
+        "doc.go",
         "graph.go",
         "policy/policy.go",
         "policy/resolve.go",