docs: Update README.md

feat: Add FlinkKAfkaToIceberg Application

docs: Update README.md

fix: Use http for maven downloader

fix: Use kotlin for better SQL readability

feat: Add Flink SQL Application

fix: Add connect rest advertize host name

fix: Invalid compose-cdc indent

chore: Update .envrc.template, Makefile

fix: .envrc Ignore

feat: Schema Registry Supoprt

feat: Add Iceberg CDC Playbook

feat: Support Flink CDC Pipeline

fix: Use healthcheck for cdc containers

feat: Support Kafka, CDC Connectorwq