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/Services/SituationMap/map_service.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<service namespace="SituationMap" abbreviation="MAP" procNames="SituationMap">
+  <rcs>
+    <Id Id="$Id$"/>
+    <HeadURL HeadURL="$HeadURL$"/>
+    <Author Author="$Author$"/>
+  </rcs>
+  <operatorRights offset="35">
+    <guiPlugin name="SituationMap" offset="1">
+      <operatorRightGroup name="Situation Map" description="Show Situation Map">
+        <operatorRight right="SituationMapShow" value="1" description="Show Situation Map"/>
+      </operatorRightGroup>
+      <operatorRightGroup name="Situation Map - Distance Measurement" description="Measure Distances on the Situation Map">
+        <operatorRight right="SituationMapMeasureDistance" value="2" description="Measure Distances on the Situation Map"/>
+      </operatorRightGroup>
+      <operatorRightGroup name="Situation Map - Terrain Profile" description="Create and Show Terrain Profiles on Situation Map">
+        <operatorRight right="SituationMapTerrainProfile" value="4" description="Create and Show Terrain Profiles on Situation Map"/>
+      </operatorRightGroup>
+      <operatorRightGroup name="Situation Map - Viewshed" description="Create and Show Viewsheds (Areas visible from point on terrain elevation grid)">
+        <operatorRight right="SituationMapViewshed" value="3" description="Create and Show Viewsheds (Areas visible from point on terrain elevation grid)"/>
+      </operatorRightGroup>
+    </guiPlugin>
+  </operatorRights>
+</service>