Expose BazelAndroidConfiguration to starlark

Expose `BazelAndroidConfiguration` fragment to starlark

Closes #18665.

PiperOrigin-RevId: 559258767
Change-Id: I7d43d85320fd45220d51923409532a27be6b8ef8

Author: mauriciogg

src/main/java/com/google/devtools/build/lib/rules/android/BUILD

@@ -31,6 +31,7 @@ java_library(
         "test_suite_property_name.txt",
     ],
     deps = [
+        "//src/main/java/com/google/devtools/build/docgen/annot",
         "//src/main/java/com/google/devtools/build/lib/actions",
         "//src/main/java/com/google/devtools/build/lib/actions:artifacts",
         "//src/main/java/com/google/devtools/build/lib/actions:commandline_item",
@@ -102,6 +103,7 @@ java_library(
         "//src/main/java/com/google/devtools/build/lib/vfs",
         "//src/main/java/com/google/devtools/build/lib/vfs:pathfragment",
         "//src/main/java/com/google/devtools/common/options",
+        "//src/main/java/net/starlark/java/annot",
         "//src/main/java/net/starlark/java/eval",
         "//src/main/protobuf:android_deploy_info_java_proto",
         "//src/main/protobuf:failure_details_java_proto",

src/main/java/com/google/devtools/build/lib/rules/android/BazelAndroidConfiguration.java

@@ -14,6 +14,7 @@
 
 package com.google.devtools.build.lib.rules.android;
 
+import com.google.devtools.build.docgen.annot.DocCategory;
 import com.google.devtools.build.lib.analysis.config.BuildOptions;
 import com.google.devtools.build.lib.analysis.config.Fragment;
 import com.google.devtools.build.lib.analysis.config.FragmentOptions;
@@ -23,9 +24,12 @@
 import com.google.devtools.common.options.OptionDocumentationCategory;
 import com.google.devtools.common.options.OptionEffectTag;
 import com.google.errorprone.annotations.CheckReturnValue;
+import net.starlark.java.annot.StarlarkBuiltin;
+import net.starlark.java.annot.StarlarkMethod;
 
 /** Configuration fragment for Android rules that is specific to Bazel. */
 @Immutable
+@StarlarkBuiltin(name = "bazel_android", category = DocCategory.CONFIGURATION_FRAGMENT)
 @RequiresOptions(options = {BazelAndroidConfiguration.Options.class})
 @CheckReturnValue
 public class BazelAndroidConfiguration extends Fragment {
@@ -56,6 +60,10 @@ public BazelAndroidConfiguration(BuildOptions buildOptions) {
     this.mergeAndroidManifestPermissions = options.mergeAndroidManifestPermissions;
   }
 
+  @StarlarkMethod(
+      name = "merge_android_manifest_permissions",
+      structField = true,
+      doc = "The value of --merge_android_manifest_permissions flag.")
   public boolean getMergeAndroidManifestPermissions() {
     return this.mergeAndroidManifestPermissions;
   }