feat: Add session layout

sources/Session/CMakeLists.txt

@@ -0,0 +1,23 @@
+add_library(Session STATIC
+    Message.hpp Message.cpp
+    MessageSerializer.hpp MessageSerializer.cpp
+    PluginBlocks.hpp
+    LLMRequest.hpp
+    ResponseEvent.hpp
+    ConversationHistory.hpp ConversationHistory.cpp
+    ResponseRouter.hpp ResponseRouter.cpp
+    Session.hpp Session.cpp
+    SessionManager.hpp SessionManager.cpp
+    SystemPromptBuilder.hpp SystemPromptBuilder.cpp
+)
+
+target_link_libraries(Session
+    PUBLIC
+        Qt::Core
+        LLMQore
+        Agents
+)
+
+target_include_directories(Session PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)