feat: Add CalendarSelector component and install new dependencies.

docker-compose.yml

@@ -0,0 +1,27 @@
+services:
+  server:
+    build:
+      context: .
+      dockerfile: server/Dockerfile
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./server:/app/server
+      - ./eventy.db:/app/eventy.db # Persist DB or mount existing one
+    environment:
+      - PORT=3000
+    restart: unless-stopped
+
+  client:
+    build:
+      context: ./client
+      dockerfile: Dockerfile
+    ports:
+      - "5173:5173"
+    volumes:
+      - ./client:/app
+    depends_on:
+      - server
+    environment:
+      - VITE_API_URL=http://server:3000
+    restart: unless-stopped