feat: update arcadedb-builder.sh to deploy plugins to lib/plugins/

- Add creation of lib/plugins/ directory during build
- Route shaded modules (plugins) to lib/plugins/ instead of lib/
- Regular modules continue to deploy to lib/
- Aligns builder with new plugin architecture using isolated class loaders

Co-authored-by: Roberto Franchini <robfrank@users.noreply.github.com>

Author: github-actions[bot]

package/arcadedb-builder.sh

@@ -804,6 +804,17 @@ download_optional_modules() {
 
   local extracted_dir="$TEMP_DIR/arcadedb-${ARCADEDB_VERSION}"
   local lib_dir="${extracted_dir}/lib"
+  local plugins_dir="${extracted_dir}/lib/plugins"
+
+  # Create plugins directory if it doesn't exist
+  if [[ "$DRY_RUN" != true ]]; then
+    if [[ ! -d "$plugins_dir" ]]; then
+      mkdir -p "$plugins_dir"
+      log_verbose "Created plugins directory: $plugins_dir"
+    fi
+  else
+    log_info "[DRY RUN] Would create plugins directory"
+  fi
 
   # Split modules by comma
   IFS=',' read -ra modules <<<"$SELECTED_MODULES"
@@ -813,13 +824,16 @@ download_optional_modules() {
 
     # Determine if shaded or regular JAR
     local classifier=""
+    local dest_dir="$lib_dir"
     if [[ " $SHADED_MODULES " =~ " $module " ]]; then
       classifier="-shaded"
+      # Shaded modules are plugins and go to lib/plugins/
+      dest_dir="$plugins_dir"
     fi
 
     local artifact_id="arcadedb-${module}"
     local jar_filename="${artifact_id}-${ARCADEDB_VERSION}${classifier}.jar"
-    local jar_file="${lib_dir}/${jar_filename}"
+    local jar_file="${dest_dir}/${jar_filename}"
 
     if [[ -n "$LOCAL_REPO" ]]; then
       # Local repository mode