Create Native getTouchpadHardwareProperties()

Create Native method to get the hardware properties of touchpad and
connected it to InputManagerService.java using JNI

Bug: 286551975

Test: Verified that the data flow works correctly and the method references are valid.
Flag: com.android.hardware.input.touchpad_visualizer
Change-Id: Ic6c32eabd3078ff2b50e3b3bb430abadd9dd752c
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
index 5c5fd3f..7931613 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
@@ -251,7 +251,8 @@
     }
 
     mGestureInterpreter->Initialize(GESTURES_DEVCLASS_TOUCHPAD);
-    mGestureInterpreter->SetHardwareProperties(createHardwareProperties(deviceContext));
+    mHardwareProperties = createHardwareProperties(deviceContext);
+    mGestureInterpreter->SetHardwareProperties(mHardwareProperties);
     // Even though we don't explicitly delete copy/move semantics, it's safe to
     // give away pointers to TouchpadInputMapper and its members here because
     // 1) mGestureInterpreter's lifecycle is determined by TouchpadInputMapper, and
@@ -493,4 +494,8 @@
     return mDisplayId;
 }
 
+std::optional<HardwareProperties> TouchpadInputMapper::getTouchpadHardwareProperties() {
+    return mHardwareProperties;
+}
+
 } // namespace android