Fix the doxygen documentation from public headers (#6394)

* Add documentation comments to DeboneProcess.h

test/unit/Common/utLineSplitter.cpp

@@ -5,8 +5,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2025, assimp team
 
-
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,
@@ -48,9 +46,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using namespace Assimp;
 
-class utLineSplitter : public ::testing::Test {
-    // empty
-};
+class utLineSplitter : public ::testing::Test {};
 
 TEST_F(utLineSplitter, tokenizetest) {
     DefaultIOSystem fs;