LibDebug: Move everything into the "Debug" namespace

Libraries/LibDebug/Dwarf/LineProgram.cpp

@@ -30,6 +30,8 @@
 
 //#define DWARF_DEBUG
 
+namespace Debug::Dwarf {
+
 LineProgram::LineProgram(InputMemoryStream& stream)
     : m_stream(stream)
 {
@@ -252,3 +254,5 @@ void LineProgram::run_program()
         }
     }
 }
+
+}