chore: Run clang-format over the codebase (#82)

This commit is a result of the following commands:

clang-format-19 --style=file -i $(git ls-files | fgrep .cpp)
clang-format-19 --style=file -i $(git ls-files | fgrep .hpp)

chat/NavigationPanel.hpp

@@ -19,8 +19,8 @@
 
 #pragma once
 
-#include <QObject>
 #include <coreplugin/inavigationwidgetfactory.h>
+#include <QObject>
 
 namespace QodeAssist::Chat {
 
@@ -34,4 +34,4 @@ public:
     Core::NavigationView createWidget() override;
 };
 
-}
+} // namespace QodeAssist::Chat