chore: add Cloudron PackageTemplate, helper script; add .gitattributes/.editorconfig; refine .gitignore; improve workspace scripts

scripts/new-package.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage: scripts/new-package.sh <AppName> [--id <com.example.app>] [--title <Title>] [--port <port>]
+
+Creates CloudronPackages/<AppName> from PackageTemplate and replaces placeholders:
+  __APP_ID__, __APP_TITLE__, __HTTP_PORT__
+
+Examples:
+  scripts/new-package.sh MyApp --id com.example.myapp --title "My App" --port 3000
+EOF
+}
+
+if [[ $# -lt 1 ]]; then
+  usage; exit 1
+fi
+
+APP_NAME="$1"; shift
+APP_ID="com.example.${APP_NAME,,}"
+APP_TITLE="$APP_NAME"
+HTTP_PORT="3000"
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --id) APP_ID="$2"; shift 2;;
+    --title) APP_TITLE="$2"; shift 2;;
+    --port) HTTP_PORT="$2"; shift 2;;
+    -h|--help) usage; exit 0;;
+    *) echo "Unknown argument: $1"; usage; exit 1;;
+  esac
+done
+
+SRC_DIR="CloudronPackages/PackageTemplate"
+DEST_DIR="CloudronPackages/${APP_NAME}"
+
+[[ -d "$SRC_DIR" ]] || { echo "Template not found: $SRC_DIR"; exit 1; }
+[[ -e "$DEST_DIR" ]] && { echo "Destination already exists: $DEST_DIR"; exit 1; }
+
+mkdir -p "$DEST_DIR"
+cp -a "$SRC_DIR"/. "$DEST_DIR"/
+
+# Replace placeholders in text files
+find "$DEST_DIR" -type f \( -name "*" ! -name "*.png" \) -print0 | while IFS= read -r -d '' f; do
+  sed -i "s#__APP_ID__#${APP_ID}#g" "$f"
+  sed -i "s#__APP_TITLE__#${APP_TITLE}#g" "$f"
+  sed -i "s#__HTTP_PORT__#${HTTP_PORT}#g" "$f"
+done
+
+echo "Created package at: $DEST_DIR"
+echo "Next steps: edit Dockerfile and start.sh to run your app. Add logo.png if desired."
+