Qt6 Migration: Complete migration with DDS/RTI support and build validation

Major Changes:
- Merged latest Qt5 devel content from dlbo (292 files changed, 7 new dirs)
- Consolidated forward-declarations and include folders
- Removed unneeded modules per Niklas' repo check list

Build System Fixes:
- Fixed CMake VERSION_GREATER syntax in ParticipantManagement/CMakeLists.txt
- Added VLC packages (libvlc-dev, vlc-plugin-base) to docker_build.sh
- Added PostgreSQL dev packages (libpq-dev, postgresql-server-dev-all) to Dockerfile
- Fixed locale warnings (ANSI_X3.4-1968 → C.UTF-8)
- Fixed ArcGIS SDK path warnings when BUILD_ARCGIS=OFF

Code Generation Fixes:
- Fixed IDL enum collisions (PortType→CorePortType/DdsutPortType, PdmEventType)
- Fixed Grantlee template svc_translation.cpp.grantlee:
  - Changed {{ idl_enum.name }}_def:: to {{ idl_enum.name }}::
  - Fixed .underlying() calls for C++11 scoped enums (enum class)
- Removed generated files from repo (moc_*, *_dtc.h, *_ftc.h)

Validation:
- BUILD_RTI=ON: SUCCESS
- BUILD_RTI=OFF: SUCCESS
- C++17 standard maintained for RTI 7.7 compatibility
- Ubuntu 26.04 Docker environment verified

Remaining Warnings (expected):
- BgViewer, KDChart, KDReports, Poppler-Qt6 not found (optional features)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt5-before/dlbo/Lts/Tools/Niklas-Excon-Helper/settings.py

@@ -0,0 +1,70 @@
+import json
+import os.path
+import subprocess
+
+
+def save_settings(settings, root_pass):
+    settings_dir = "/etc/excon_helper"
+    settings_file = os.path.join(settings_dir, ".settings.json")
+    temp_file = "/tmp/.settings.json"  # Temporäre Datei
+
+    # Temporäre Datei lokal schreiben
+    with open(temp_file, "w") as temp:
+        json.dump(settings, temp, indent=4)
+
+    # Befehle zum Erstellen des Zielverzeichnisses und Kopieren der Datei
+    commands = [
+        f"mkdir -p {settings_dir}",
+        f"cp {temp_file} {settings_file}",
+        f"chmod 777 {settings_file}",
+        f"rm {temp_file}"  # Temporäre Datei entfernen
+    ]
+
+    for command in commands:
+        try:
+            # Übergebe das Passwort an `sudo` und führe den Befehl aus
+            process = subprocess.run(
+                f"echo {root_pass} | sudo -S {command}",
+                shell=True
+            )
+            if process.returncode != 0:
+                print(f"Cant save settings file")
+                return False
+        except Exception as e:
+            print(f"Error: {e}")
+            return False
+
+    return True
+
+def load_settings():
+    settings_file = "/etc/excon_helper/.settings.json"
+
+    # Überprüfen, ob die Datei existiert
+    if not os.path.exists(settings_file):
+        print(f"Error: Settings file doesnt exist")
+        return {}
+
+    # Lesen der JSON-Datei
+    try:
+        with open(settings_file, "r") as file:
+            settings = json.load(file)
+        return settings
+    except json.JSONDecodeError:
+        print("Error: Corrupted json file")
+    except PermissionError:
+        print("Error: no permission to read the file")
+    except Exception as e:
+        print(f"Unknown error: {e}")
+
+    return {}
+
+def get_setting(key):
+    settings = load_settings()
+    if settings is not None:
+        return settings.get(key)
+    return None
+
+def set_setting(key, value):
+    settings = load_settings()
+    settings.set(key, value)
+    save_settings(settings)