Set up framework and service for Nearby module.

Files under framework/api are updated using
`build/soong/scripts/gen-java-current-api-files.sh
"packages/modules/Nearby/framework/api"  system- module-lib- && m
update-api`. They are essentially empty as nearby platform APIs do not
exist yet.

Bug: 189355156
Test: mmm -j packages/modules/Nearby
Change-Id: I8df0e459a962b54cbd1a891f1fe2a1474f4cbc75
diff --git a/nearby/framework/Android.bp b/nearby/framework/Android.bp
new file mode 100644
index 0000000..5339551
--- /dev/null
+++ b/nearby/framework/Android.bp
@@ -0,0 +1,84 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+filegroup {
+    name: "nearby-java-sources",
+    srcs: [
+        "java/**/*.java",
+        "java/**/*.aidl",
+    ],
+    path: "java",
+    visibility: ["//visibility:private"],
+}
+
+// Defaults shared between `framework-nearby` & `framework-nearby-pre-jarjar`
+java_defaults {
+    name: "framework-nearby-defaults",
+    defaults: ["nearby-module-sdk-version-defaults"],
+    srcs: [
+        ":nearby-java-sources",
+    ],
+}
+
+// Defaults for SDK versions.
+java_defaults {
+    name: "nearby-module-sdk-version-defaults",
+    min_sdk_version: "current",
+    target_sdk_version: "current",
+}
+
+
+// Nearby-service needs pre-jarjared version of framework-nearby so it can reference copied utility
+// classes before they are renamed.
+java_library {
+    name: "framework-nearby-pre-jarjar",
+    defaults: ["framework-nearby-defaults"],
+    sdk_version: "module_current",
+    libs: ["framework-annotations-lib"],
+    // java_api_finder must accompany `srcs` (`srcs` defined in `framework-nearby-defaults`)
+    plugins: ["java_api_finder"],
+    installable: false,
+    visibility: [
+        "//packages/modules/Nearby/service",
+    ],
+}
+
+// SDK library for nearby module API.
+java_sdk_library {
+    name: "framework-nearby",
+    defaults: [
+        "framework-module-defaults",  // the SDK needs to be usable in all processes
+        "framework-nearby-defaults",
+    ],
+
+    apex_available: [
+        "com.android.nearby",
+    ],
+    installable: true,
+    optimize: {
+        enabled: false
+    },
+
+    // Restrict access to implementation library.
+    impl_library_visibility: [
+        "//packages/modules/Nearby/service:__subpackages__",
+    ],
+    permitted_packages: [
+        "android.nearby",
+    ],
+}