Port Brave Sync server to Rust

Use SQLite for persistence and generate Rust protobuf bindings at build time.

Add Docker image support for containerized deployment.

Co-Authored-By: codex <[email protected]>

schema/protobuf/sync_pb/web_app_specifics.proto

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+// Copyright 2019 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// If you change or add any fields in this file, update
+// components/sync/protocol/proto_visitors.h and potentially
+// components/sync/protocol/proto_enum_conversions.{h, cc}.
+
+syntax = "proto2";
+
+option go_package = "./sync_pb";
+
+option java_multiple_files = true;
+option java_package = "org.chromium.components.sync.protocol";
+
+option optimize_for = LITE_RUNTIME;
+
+package sync_pb;
+
+// Sync & local data: Information about web app icon.
+message WebAppIconInfo {
+  enum Purpose {
+    UNSPECIFIED = 0;
+    // Suitable for any purpose.
+    ANY = 1;
+    // Designed for masking.
+    MASKABLE = 2;
+    // Suitable for monochrome purposes.
+    MONOCHROME = 3;
+  }
+
+  // The size of the square app icon, in raw pixels.
+  optional int32 size_in_px = 1;
+  // The URL of the app icon.
+  optional string url = 2;
+  // The purpose or context in which the icon should be used.
+  optional Purpose purpose = 3;
+}
+
+// WebApp data. This is a synced part of
+// chrome/browser/web_applications/proto/web_app.proto data.
+message WebAppSpecifics {
+  // This enum should be a subset of the DisplayMode enum in
+  // chrome/browser/web_applications/proto/web_app.proto and
+  // third_party/blink/public/mojom/manifest/display_mode.mojom
+  enum UserDisplayMode {
+    UNSPECIFIED = 0;
+    BROWSER = 1;
+    // MINIMAL_UI is never serialized.
+    STANDALONE = 3;
+    // FULLSCREEN is never serialized.
+    // WINDOW_CONTROLS_OVERLAY is never serialized.
+    TABBED = 6;
+    // BORDERLESS is never serialized.
+    // PICTURE_IN_PICTURE is never serialized.
+  }
+
+  optional string start_url = 1;
+  optional string name = 2;
+
+  // User-selected display setting, which may be used if no platform-specific
+  // setting is available (eg. on Windows, Mac, and Linux). If absent,
+  // user_display_mode_cros may be used as fallback (if populated). On pre-M122
+  // devices this field is used by all platforms (ie. ChromeOS, Windows, Mac,
+  // Linux) and always replaces any locally-stored value, with
+  // absent/unspecified falling back to standalone.
+  optional UserDisplayMode user_display_mode_default = 3;
+  reserved "user_display_mode_non_cros";
+  reserved "user_display_mode";
+
+  optional uint32 theme_color = 4;
+  optional string scope = 5;
+  repeated WebAppIconInfo icon_infos = 6;
+
+  // Used to store the page number that the app is displayed on in
+  // chrome://apps.
+  optional string user_page_ordinal = 7;
+  // Used to store the in-page ranking for ordering apps in its given
+  // |user_page_ordinal| page.
+  optional string user_launch_ordinal = 8;
+
+  // Used to store id specified in the manifest. This is a path that is relative
+  // to the start_url, similar to how the id field is parsed in
+  // https://www.w3.org/TR/appmanifest/#id-member, except this field does not
+  // include a scheme or origin. This is only the path after the origin,
+  // excluding the first "/".
+  // Note: If this field is not set, then the manifest_id is generated using the
+  // start_url in GenerateManifestIdFromStartUrlOnly. This is different than if
+  // this is set to "", which means the manifest_id will be set to the origin of
+  // the start_url.
+  optional string relative_manifest_id = 9;
+
+  // User-selected display setting for ChromeOS.
+  // If absent, user_display_mode_default may be used as fallback (if
+  // populated).
+  // Introduced in M122.
+  optional UserDisplayMode user_display_mode_cros = 10;
+}