Modular AOT compiler main

Issue: https://github.com/dart-lang/sdk/issues/61635
Change-Id: I55eaf5267c63d75b317276dfeab4d27e93139db3
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/475407
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>

utils/modular_aot_compiler/BUILD.gn

@@ -0,0 +1,24 @@
+# Copyright (c) 2026, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+import("../../runtime/runtime_args.gni")
+import("../aot_snapshot.gni")
+
+group("modular_aot_compiler") {
+  public_deps = [ ":modular_aot_compiler_snapshot" ]
+}
+
+aot_snapshot("modular_aot_compiler_snapshot") {
+  main_dart = "../../pkg/native_compiler/bin/modular_aot_compiler.dart"
+  name = "modular_aot_compiler"
+
+  output = "$root_gen_dir/modular_aot_compiler.dart.snapshot"
+
+  # dartaotruntime has dart_product_config applied to it, so it is built in
+  # product mode in both release and product builds, and is only built in debug
+  # mode in debug builds. The following line ensures that the dartaotruntime and
+  # modular_aot_compiler.dart.snapshot in an SDK build are always compatible with
+  # each other.
+  force_product_mode = !dart_debug
+}