Debugger: Recognize source data within disassembler view

... and use it to toggle breakpoints by file and line,
and for jumping to file and line.

Task-number: QTCREATORBUG-14278
Change-Id: I799d085eb53339905ea3608022aeae5a9aef1fda
Reviewed-by: Niels Weber <niels.weber@theqtcompany.com>
Reviewed-by: Christian Stenger <christian.stenger@theqtcompany.com>

src/plugins/debugger/debuggerinternalconstants.h

@@ -47,6 +47,7 @@ namespace Internal {
 
 const char OPENED_BY_DEBUGGER[]         = "OpenedByDebugger";
 const char OPENED_WITH_DISASSEMBLY[]    = "DisassemblerView";
+const char DISASSEMBLER_SOURCE_FILE[]   = "DisassemblerSourceFile";
 
 // Debug action
 const char DEBUG[]                      = "Debugger.Debug";