Soong package structure refactoring

Give prebuilt_etc and sh_binary their own packages and split the
gigantic main Android.bp up to small, per-package ones.

Test: m nothing, TreeHugger
Bug: 156980228
Change-Id: I7b00cd344b9f16861f1ff39edf0029f016b853d0
diff --git a/java/Android.bp b/java/Android.bp
new file mode 100644
index 0000000..2de1b8e
--- /dev/null
+++ b/java/Android.bp
@@ -0,0 +1,66 @@
+bootstrap_go_package {
+    name: "soong-java",
+    pkgPath: "android/soong/java",
+    deps: [
+        "blueprint",
+        "blueprint-pathtools",
+        "soong",
+        "soong-android",
+        "soong-cc",
+        "soong-dexpreopt",
+        "soong-genrule",
+        "soong-java-config",
+        "soong-remoteexec",
+        "soong-tradefed",
+    ],
+    srcs: [
+        "aapt2.go",
+        "aar.go",
+        "android_manifest.go",
+        "android_resources.go",
+        "androidmk.go",
+        "app_builder.go",
+        "app.go",
+        "builder.go",
+        "device_host_converter.go",
+        "dex.go",
+        "dexpreopt.go",
+        "dexpreopt_bootjars.go",
+        "dexpreopt_config.go",
+        "droiddoc.go",
+        "gen.go",
+        "genrule.go",
+        "hiddenapi.go",
+        "hiddenapi_singleton.go",
+        "jacoco.go",
+        "java.go",
+        "jdeps.go",
+        "java_resources.go",
+        "kotlin.go",
+        "platform_compat_config.go",
+        "plugin.go",
+        "prebuilt_apis.go",
+        "proto.go",
+        "robolectric.go",
+        "sdk.go",
+        "sdk_library.go",
+        "support_libraries.go",
+        "sysprop.go",
+        "system_modules.go",
+        "testing.go",
+        "tradefed.go",
+    ],
+    testSrcs: [
+        "androidmk_test.go",
+        "app_test.go",
+        "device_host_converter_test.go",
+        "dexpreopt_test.go",
+        "dexpreopt_bootjars_test.go",
+        "java_test.go",
+        "jdeps_test.go",
+        "kotlin_test.go",
+        "plugin_test.go",
+        "sdk_test.go",
+    ],
+    pluginFor: ["soong_build"],
+}