chore: remove configuration files and enhance blockchain explorer with advanced search, analytics, and export features

- Delete .aitbc.yaml.example CLI configuration template
- Delete .lycheeignore link checker exclusion rules
- Delete .nvmrc Node.js version specification
- Add advanced search panel with filters for address, amount range, transaction type, time range, and validator
- Add analytics dashboard with transaction volume, active addresses, and block time metrics
- Add Chart.js integration

apps/blockchain-node/pyproject.toml

@@ -25,6 +25,7 @@ uvloop = ">=0.22.0"
 rich = "^13.7.1"
 cryptography = "^42.0.5"
 asyncpg = ">=0.29.0"
+requests = "^2.32.5"
 
 [tool.poetry.extras]
 uvloop = ["uvloop"]