feat: add marketplace and AI services RPC endpoints

📋 Marketplace Endpoints:
• GET /marketplace/listings - List all active marketplace items
• POST /marketplace/create - Create new marketplace listing
• Demo listings for GPU and compute resources
• In-memory storage with active status filtering

🤖 AI Services Endpoints:
• POST /ai/submit - Submit AI jobs with payment
• GET /ai/stats - AI service statistics and revenue tracking
• Support for text, image, and training job types

templates/node_setup_template.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+# AITBC Node Setup Template
+# Usage: ./node_setup_template.sh <node-name> <role> <genesis-authority>
+
+NODE_NAME=$1
+ROLE=$2
+GENESIS_AUTHORITY=$3
+
+echo "Setting up AITBC node: $NODE_NAME"
+echo "Role: $ROLE"
+echo "Genesis Authority: $GENESIS_AUTHORITY"
+
+# Install dependencies
+apt update && apt install -y python3 python3-venv redis-server
+
+# Setup directories
+mkdir -p /var/lib/aitbc/{data,keystore,logs}
+mkdir -p /etc/aitbc
+
+# Copy configuration from genesis authority
+scp $GENESIS_AUTHORITY:/etc/aitbc/blockchain.env /etc/aitbc/
+
+# Pull code
+cd /opt/aitbc
+git clone http://gitea.bubuit.net:oib/aitbc.git
+cd aitbc
+
+# Setup virtual environment
+python3 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
+
+# Configure node role
+if [ "$ROLE" = "follower" ]; then
+  sed -i 's/enable_block_production=true/enable_block_production=false/g' /etc/aitbc/blockchain.env
+  sed -i "s/proposer_id=.*/proposer_id=follower-node-$NODE_NAME/g" /etc/aitbc/blockchain.env
+fi
+
+# Setup systemd services
+cp systemd/*.service /etc/systemd/system/
+systemctl daemon-reload
+systemctl enable aitbc-blockchain-node aitbc-blockchain-rpc
+
+echo "Node $NODE_NAME setup complete!"