Add pinot-cli: interactive and batch command-line client

[xiangfu0]

Adds a new pinot-cli module providing a modern CLI for Apache Pinot:

• Interactive REPL with multi-line SQL, history, and optional pager
• Batch execution with multiple output formats: CSV/TSV/JSON/ALIGNED/VERTICAL/AUTO/MARKDOWN
• Config via properties file (PINOT_CONFIG) and environment variables, forwards session options
• Supports extra HTTP headers and debug diagnostics
• Shaded executable JAR

Build:
./mvnw -DskipTests -pl pinot-clients/pinot-cli -am package

Artifacts:

• pinot-clients/pinot-cli/target/pinot-cli-executable.jar (shaded, executable)

Notes:

• Uses pinot-jdbc-client, picocli, and jline
• Keeps default interactive format ALIGNED; AUTO switches based on terminal width

[Copilot]

Pull Request Overview

This PR adds a new pinot-cli module providing a modern command-line interface for Apache Pinot with both interactive REPL and batch execution capabilities.

Key changes:

• Interactive REPL with multi-line SQL support, command history, and optional pager integration
• Multiple output formats (CSV, TSV, JSON, ALIGNED, VERTICAL, AUTO, MARKDOWN) for flexible data presentation
• Configuration support via properties files and environment variables with session option forwarding

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 7 comments.

File	Description
pinot-clients/pom.xml	Added pinot-cli module to the parent POM's modules list
pinot-clients/pinot-cli/pom.xml	Maven configuration for the new CLI module with dependencies and shaded JAR build
pinot-clients/pinot-cli/src/main/java/org/apache/pinot/cli/PinotCli.java	Main CLI implementation with REPL, batch execution, and formatting logic
pinot-clients/pinot-cli/README.md	Comprehensive documentation for CLI usage, configuration, and examples

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.