feat: add App Intents and device control widget

app-intents/DeviceQuery.swift

@@ -0,0 +1,25 @@
+import AppIntents
+internal import ExpoAppIntents
+
+/// Resolves devices from the catalog published by `syncDevicesToWidget`.
+struct DeviceQuery: EntityStringQuery {
+  func entities(for identifiers: [String]) async throws -> [DeviceEntity] {
+    try await AppIntentEntityStore.shared
+      .entities(ofKind: "device", matching: identifiers)
+      .map(DeviceEntity.init(record:))
+  }
+
+  func suggestedEntities() async throws -> [DeviceEntity] {
+    try await AppIntentEntityStore.shared
+      .entities(ofKind: "device")
+      .map(DeviceEntity.init(record:))
+  }
+
+  func entities(matching string: String) async throws -> [DeviceEntity] {
+    let search = string.trimmingCharacters(in: .whitespacesAndNewlines)
+    guard !search.isEmpty else {
+      return []
+    }
+    return try await suggestedEntities().filter { $0.matches(search) }
+  }
+}