feat(junie): added install-dependencies.sh script

Author: jetbrains-junie[bot]

.devcontainer/install-dependencies.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+if [ -f "composer.json" ]; then
+    echo "Found composer.json in project root. Installing dependencies..."
+    composer install --no-interaction --ignore-platform-reqs
+    echo "✅ PHP dependencies installed successfully in project root."
+else
+    echo "⚠️ No composer.json in project root. Searching for composer.json files in subdirectories..."
+
+    find . -type f -name "composer.json" | while read composer_file; do
+        dir=$(dirname "$composer_file")
+        echo "Installing dependencies in $dir..."
+        (cd "$dir" && composer install --no-interaction --ignore-platform-reqs)
+        if [ $? -eq 0 ]; then
+            echo "✅ Dependencies installed successfully in $dir."
+        else
+            echo "❌ Failed to install dependencies in $dir."
+        fi
+    done
+fi