Add GVM (OpenVAS) add-on initialization script

- Create a new script `run.sh` for initializing and launching the GVM add-on.
- Ensure required environment variables `USERNAME` and `PASSWORD` are set.
- Set the timezone if the `TZ` variable is provided.
- Initialize a data directory at `/data` if it does not exist.
- Launch the GVM service and log output to a file.

fix(sonarqube): fix config.json

gvm/run.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+
+log() {
+    echo "[GVM ADD-ON] $(date +"%Y-%m-%d %H:%M:%S") - $*"
+}
+
+# Ensure required env vars are set
+: "${USERNAME:?Environment variable USERNAME not set}"
+: "${PASSWORD:?Environment variable PASSWORD not set}"
+
+log "Starting GVM (OpenVAS) add-on..."
+
+# Setup timezone
+if [ -n "$TZ" ]; then
+    log "Setting timezone to $TZ"
+    ln -snf /usr/share/zoneinfo/$TZ /etc/localtime
+    echo "$TZ" > /etc/timezone
+fi
+
+# Initialize data directory
+DATA_DIR="/data"
+if [ ! -d "$DATA_DIR" ]; then
+    log "Creating data directory at $DATA_DIR"
+    mkdir -p "$DATA_DIR"
+fi
+
+log "Launching GVM service..."
+exec /usr/local/bin/dumb-init gvm-start | tee -a "$DATA_DIR/gvm.log"