mbproxy/install: add Windows service-management batch files

Four simple .bat files — install / remove / start / stop-service — that
manage the 'mbproxy' Windows service against the Mbproxy.exe in their
own folder. publish.ps1 / publish.sh copy them into each win-* publish
flavour, so a published Windows folder is self-managing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

mbproxy/install/publish.sh

@@ -94,6 +94,24 @@ for flavour in self-contained framework-dependent; do
     printf '  %-22s <- %s\n' "$flavour" "$config_template"
 done
 
+# Ship the Windows service-management batch files (win RIDs only). Each acts on the
+# Mbproxy.exe in its own folder, so the published folder is self-managing.
+if [[ "$rid" == win-* ]]; then
+    echo
+    echo "=== Service scripts ==="
+    for flavour in self-contained framework-dependent; do
+        for script in install-service.bat remove-service.bat start-service.bat stop-service.bat; do
+            src="$repo_root/install/$script"
+            if [[ ! -f "$src" ]]; then
+                echo "Cannot find service script: $src" >&2
+                exit 1
+            fi
+            cp -f "$src" "$output_dir/$flavour/$script"
+        done
+        printf '  %-22s <- install/*-service.bat\n' "$flavour"
+    done
+fi
+
 echo
 echo "=== Result ($rid) ==="
 for flavour in self-contained framework-dependent; do