QtcProcess: Limit the inclusion of qtcprocess.h

Move the rest of QtcProcess enums to processenums.h.
Move ExitCodeInterpreter into processenums.h.
Remove superfluous Utils:: prefix.

Change-Id: Iaa596f353d33d6930085a621b114cc15a35caa80
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/debugger/debuggeritemmanager.cpp

@@ -763,7 +763,7 @@ void DebuggerItemManagerPrivate::autoDetectGdbOrLldbDebuggers(const FilePaths &s
         proc.setCommand({"xcrun", {"--find", "lldb"}});
         proc.runBlocking();
         // FIXME:
-        if (proc.result() == QtcProcess::FinishedWithSuccess) {
+        if (proc.result() == ProcessResult::FinishedWithSuccess) {
             QString lPath = proc.allOutput().trimmed();
             if (!lPath.isEmpty()) {
                 const QFileInfo fi(lPath);