Resolve reference leak and warnings in binder interception (#122)

This merge addresses a critical strong reference leak in the ioctl hook that occurred during binder transaction interception. The leak was caused by a double increment of the reference count—once manually and once by a smart pointer's constructor—with only a single corresponding decrement. The fix ensures a balanced increment and decrement, preventing the leak and subsequent crashes.

Additionally, this change:
-   Reverts a now-unnecessary compatibility layer for the Android 11 RefBase ABI.
-   Implements `getInterfaceDescriptor` in the `BinderStub` to silence framework warnings that appeared after the primary leak was fixed.

app/src/main/cpp/CMakeLists.txt

@@ -12,7 +12,7 @@ add_subdirectory(external/LSPlt/lsplt/src/main/jni)
 
 add_compile_definitions(BINDER_DISABLE_NATIVE_HANDLE)
 add_library(utils SHARED stub/stub_utils.cpp)
-target_include_directories(utils PUBLIC external/AOSP/include compat)
+target_include_directories(utils PUBLIC external/AOSP/include)
 
 add_library(binder SHARED stub/stub_binder.cpp)
 target_include_directories(binder PUBLIC external/AOSP/include)
@@ -22,7 +22,7 @@ add_executable(libinject.so inject/main.cpp inject/utils.cpp)
 target_include_directories(libinject.so PUBLIC include)
 target_link_libraries(libinject.so PRIVATE lsplt_static)
 
-add_library(${CMAKE_PROJECT_NAME} SHARED binder_interceptor.cpp compat/refbase_compat.cpp)
+add_library(${CMAKE_PROJECT_NAME} SHARED binder_interceptor.cpp)
 target_include_directories(${CMAKE_PROJECT_NAME} PUBLIC external/linux-kernel/include include)
 target_link_libraries(${CMAKE_PROJECT_NAME} PRIVATE binder lsplt_static utils)