[+] Add Dockerfile and devcontainer configuration for AquaDX development environment

.devcontainer/Dockerfile

@@ -0,0 +1,20 @@
+FROM gradle:8.8.0-jdk21
+
+ENV NODE_VERSION=22
+
+RUN apt-get update && \
+    apt-get install -y curl && \
+    curl -fsSL https://deb.nodesource.com/setup_${NODE_VERSION}.x | bash - && \
+    apt-get install -y nodejs && \
+    npm install -g npm@latest
+
+RUN npm install -g bun
+
+RUN apt-get install -y maven
+
+RUN gradle --version && \
+    node --version && \
+    npm --version && \
+    bun --version
+
+WORKDIR /workspace

.devcontainer/devcontainer.json

@@ -0,0 +1,17 @@
+{
+    "name": "AquaDX Dev Container",
+    "build": {
+        "dockerfile": "Dockerfile"
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "vscjava.vscode-gradle",
+                "vscjava.vscode-java-pack",
+                "dbaeumer.vscode-eslint",
+                "esbenp.prettier-vscode",
+                "fwcd.kotlin"
+            ]
+        }
+    }
+}