feat: Add skills feature for tool and chat calling (#351)

sources/skills/CMakeLists.txt

@@ -0,0 +1,12 @@
+add_library(Skills STATIC
+    AgentSkill.hpp
+    SkillsLoader.hpp SkillsLoader.cpp
+    SkillsManager.hpp SkillsManager.cpp
+)
+
+target_link_libraries(Skills
+    PUBLIC
+    Qt::Core
+)
+
+target_include_directories(Skills PUBLIC ${CMAKE_SOURCE_DIR})