PR #13079 from eufrizz: Install pyrealsense2 .so and __init__.py

wrappers/python/CMakeLists.txt

@@ -168,6 +168,15 @@ install(TARGETS pybackend2 pyrealsense2
 )
 
 target_include_directories(pybackend2 PRIVATE ../../src)
+
+else() # not BUILD_LEGACY_PYBACKEND
+
+install(TARGETS pyrealsense2
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${PYTHON_INSTALL_DIR}
+    ARCHIVE DESTINATION ${PYTHON_INSTALL_DIR}
+)
+
 endif()  # BUILD_LEGACY_PYBACKEND
 
 write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/pyrealsense2ConfigVersion.cmake"
@@ -192,6 +201,10 @@ install(FILES "${CMAKE_BINARY_DIR}/wrappers/python/pyrealsense2ConfigVersion.cma
     DESTINATION ${CMAKECONFIG_PY_INSTALL_DIR}
 )
 
+install(FILES pyrealsense2/__init__.py
+    DESTINATION ${PYTHON_INSTALL_DIR}
+)
+
 target_include_directories(pyrealsense2 PRIVATE ../../src)
 
 if (BUILD_PYTHON_DOCS)