Revert "Doxygen: do not add "Definition at line N of XYZ.cpp" to each method"

This reverts commit 7ee05af.

Author: wonder-sk

cmake_templates/Doxyfile.in

@@ -714,7 +714,7 @@ FILTER_SOURCE_FILES    = NO
 # Note: To get rid of all source code in the generated output, make sure also
 # VERBATIM_HEADERS is set to NO.
 
-SOURCE_BROWSER         = NO
+SOURCE_BROWSER         = YES
 
 # Setting the INLINE_SOURCES tag to YES will include the body
 # of functions and classes directly in the documentation.