refactor(infra/session_manager): from *.cpp to *.c

infra/session_manager/CMakeLists.txt

@@ -1,11 +1,11 @@
 add_library(session_manager
-    session_utils.cpp
-    session_pool.cpp
-    session_table.cpp
-    session_timer.cpp
-    session_filter.cpp
-    session_manager.cpp
-    session_transition.cpp
+    session_utils.c
+    session_pool.c
+    session_table.c
+    session_timer.c
+    session_filter.c
+    session_manager.c
+    session_transition.c
 )
 target_include_directories(session_manager PUBLIC ${CMAKE_CURRENT_LIST_DIR})
 target_include_directories(session_manager PUBLIC ${CMAKE_SOURCE_DIR}/infra/core)