Camera NDK: add user context set/get API

Also add ACaptureRequest_copy API.

Test: new NDK CTS test
Bug: 64266031
Change-Id: I77cee16621d92ff3a4cd0c929419a4972b2be040
diff --git a/camera/ndk/libcamera2ndk.map.txt b/camera/ndk/libcamera2ndk.map.txt
index 0a8a6e9..58d239b 100644
--- a/camera/ndk/libcamera2ndk.map.txt
+++ b/camera/ndk/libcamera2ndk.map.txt
@@ -26,9 +26,11 @@
     ACameraOutputTarget_create;
     ACameraOutputTarget_free;
     ACaptureRequest_addTarget;
+    ACaptureRequest_copy;
     ACaptureRequest_free;
     ACaptureRequest_getAllTags;
     ACaptureRequest_getConstEntry;
+    ACaptureRequest_getUserContext;
     ACaptureRequest_removeTarget;
     ACaptureRequest_setEntry_double;
     ACaptureRequest_setEntry_float;
@@ -36,6 +38,7 @@
     ACaptureRequest_setEntry_i64;
     ACaptureRequest_setEntry_rational;
     ACaptureRequest_setEntry_u8;
+    ACaptureRequest_setUserContext;
     ACaptureSessionOutputContainer_add;
     ACaptureSessionOutputContainer_create;
     ACaptureSessionOutputContainer_free;