chore(publish): add version format validation to publish script

- Ensure version argument follows the X.Y.Z format (e.g., 0.0.1) before proceeding with publishing

Author: tad3j

backend/publish.sh

@@ -3,6 +3,12 @@ if [ -z "$1" ]; then
     exit 1
 fi
 
+if ! [[ "$1" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+    echo "Error: Version must be in format X.Y.Z (e.g. 0.0.1)" >&2
+    exit 1
+fi
+
+
 # Check if the tag already exists
 if docker manifest inspect apillonio/nft-studio:$1 >/dev/null 2>&1; then
     read -p "Warning: Tag $1 already exists. Do you want to overwrite it? (y/N) " confirm