Fix UTF-8 encoding in async process output and add debug marker

The AsyncProcess reader thread was using wxString stream operators to convert
raw byte content, which does not properly handle UTF-8 encoded data. This has
been replaced with explicit UTF-8 decoding via wxString::FromUTF8() for both
stdout and stderr output streams.

Additionally, a debug marker "[**STDOUT**]" has been prepended to the LSP trace
output in LSPNetworkSTDIO to improve log readability and make stdout events
easier to identify in debug traces.

* AsyncProcess: UTF-8 encoding
* LSP: debug tracing

**Generated by CodeLite**

Signed-off-by: Eran Ifrah <eran@codelite.org>

Author: eranif

CodeLite/AsyncProcess/UnixProcess.cpp

@@ -206,7 +206,7 @@ void UnixProcess::StartReaderThread()
                     break;
                 } else if (!content.empty()) {
                     clProcessEvent evt(wxEVT_ASYNC_PROCESS_OUTPUT);
-                    evt.SetOutput(wxString() << content);
+                    evt.SetOutput(wxString::FromUTF8(content));
                     evt.SetOutputRaw(content);
                     process->m_owner->AddPendingEvent(evt);
                 }
@@ -217,7 +217,7 @@ void UnixProcess::StartReaderThread()
                     break;
                 } else if (!content.empty()) {
                     clProcessEvent evt(wxEVT_ASYNC_PROCESS_STDERR);
-                    evt.SetOutput(wxString() << content);
+                    evt.SetOutput(wxString::FromUTF8(content));
                     evt.SetOutputRaw(content);
                     process->m_owner->AddPendingEvent(evt);
                 }

Plugin/LSP/LSPNetworkSTDIO.cpp

@@ -53,7 +53,7 @@ void LSPNetworkSTDIO::OnProcessOutput(clProcessEvent& event)
     evt.SetString(dataRead);
     evt.SetStringRaw(dataReadRaw);
 
-    LSP_TRACE() << dataRead << endl;
+    LSP_TRACE() << "[**STDOUT**]" << dataRead << endl;
     AddPendingEvent(evt);
 }