Replace internal declarations with those from objc2-core-bluetooth

Cargo.toml

@@ -60,8 +60,17 @@ objc2-foundation = { version = "0.2.2", features = [
     "NSValue",
 ] }
 objc2-core-bluetooth = { version = "0.2.2", features = [
-    "CBPeripheral",
+    "CBAdvertisementData",
+    "CBAttribute",
     "CBCentralManager",
+    "CBCentralManagerConstants",
+    "CBCharacteristic",
+    "CBDescriptor",
+    "CBManager",
+    "CBPeer",
+    "CBPeripheral",
+    "CBService",
+    "CBUUID",
 ] }
 
 [target.'cfg(target_os = "windows")'.dependencies]

src/corebluetooth/ffi.rs

@@ -0,0 +1,19 @@
+#![allow(non_camel_case_types)]
+use std::os::raw::{c_char, c_void};
+
+pub type dispatch_object_s = c_void;
+pub type dispatch_queue_t = *mut dispatch_object_s;
+pub type dispatch_queue_attr_t = *const dispatch_object_s;
+
+pub const DISPATCH_QUEUE_SERIAL: dispatch_queue_attr_t = 0 as dispatch_queue_attr_t;
+
+extern "C" {
+    pub fn dispatch_queue_create(
+        label: *const c_char,
+        attr: dispatch_queue_attr_t,
+    ) -> dispatch_queue_t;
+}
+
+// TODO: Do we need to link to AppKit here?
+#[cfg_attr(target_os = "macos", link(name = "AppKit", kind = "framework"))]
+extern "C" {}