Add support for a product name as well as title.

Bug: 68860345
Bug: 151177513
Bug: 151953481
Bug: 213388645
Bug: 210912771

Test: m all
Test: m systemlicense
Test: m htmlnotice; out/soong/host/linux-x85/htmlnotice ...
Test: m textnotice; out/soong/host/linux-x85/textnotice ...
Test: m xmlnotice; out/soong/host/linux-x85/xmlnotice ...

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: Id5b2ebe3752081e3a89bba1d717cf103f7846043

tools/compliance/cmd/htmlnotice/htmlnotice_test.go

@@ -651,7 +651,7 @@ func Test(t *testing.T) {
 
 			var deps []string
 
-			ctx := context{stdout, stderr, os.DirFS("."), tt.includeTOC, []string{tt.stripPrefix}, tt.title, &deps}
+			ctx := context{stdout, stderr, os.DirFS("."), tt.includeTOC, "", []string{tt.stripPrefix}, tt.title, &deps}
 
 			err := htmlNotice(&ctx, rootFiles...)
 			if err != nil {