Add buildinfo_prop module

buildinfo_prop module is a replacement for build/make/tools/buildinfo.sh
so other images like microdroid can refer to build.prop.

For now, buildinfo_prop only supports a few build.prop properties, and
it's only used in microdroid.

Bug: 189164487
Test: build
Change-Id: I120654ca23a68de414df8da2051c6677afbab441

android/Android.bp

@@ -36,6 +36,7 @@ bootstrap_go_package {
         "bazel.go",
         "bazel_handler.go",
         "bazel_paths.go",
+        "buildinfo_prop.go",
         "config.go",
         "config_bp2build.go",
         "csuite_config.go",