CAMEL-21966: Add example usage snippets to camel-jbang CLI help text

[gnodet]

JIRA: CAMEL-21966

Summary

• Added example usage snippets to the --help output of 29 camel-jbang CLI commands using picocli's footer field
• Covers core commands (run, init, export, debug, explain, harden), process commands (ps, stop, get, top), catalog commands (doc, component, kamelet), action commands (trace, send, log), config, version, and other commands
• Examples show practical usage patterns directly in the help documentation, similar to tools like oc and kubectl

Test plan

• Verified compilation succeeds
• Verified code formatting is clean
• Manual: run camel <command> --help to see examples in the footer section

[github-actions]

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[github-actions]

🧪 CI tested the following changed modules:

• dsl/camel-jbang/camel-jbang-core

All tested modules (26 modules)

• Camel :: Coverage
• Camel :: Coverage [pom]
• Camel :: JBang :: Core
• Camel :: JBang :: Core [jar]
• Camel :: JBang :: Integration tests
• Camel :: JBang :: Integration tests [jar]
• Camel :: JBang :: MCP
• Camel :: JBang :: MCP [jar]
• Camel :: JBang :: Main
• Camel :: JBang :: Main [jar]
• Camel :: JBang :: Plugin :: Edit
• Camel :: JBang :: Plugin :: Edit [jar]
• Camel :: JBang :: Plugin :: Generate
• Camel :: JBang :: Plugin :: Generate [jar]
• Camel :: JBang :: Plugin :: Kubernetes
• Camel :: JBang :: Plugin :: Kubernetes [jar]
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: Route Parser [jar]
• Camel :: JBang :: Plugin :: Testing
• Camel :: JBang :: Plugin :: Testing [jar]
• Camel :: JBang :: Plugin :: Validate
• Camel :: JBang :: Plugin :: Validate [jar]
• Camel :: Launcher
• Camel :: Launcher [jar]
• Camel :: Launcher :: Container
• Camel :: Launcher :: Container [pom]

[apupier]

one example is not working

could you provide a snapshot of how it is rendered in the terminal?

[gnodet]

Claude Code on behalf of Guillaume Nodet

@apupier Here's how the examples render in the terminal:

camel run --help

$ camel run --help
...
      --observe              Enable observability services

Examples:
  camel run hello.java
  camel run hello.yaml
  camel run *
  camel run hello.java --dev
  camel run hello.java --port=8080
  camel run https://gist.github.com/user/123456

camel doc --help

$ camel doc --help
...
      --kamelets-version=<kameletsVersion>
                            Apache Camel Kamelets version
                              Default: 4.18.0

Examples:
  camel doc kafka
  camel doc timer
  camel doc aws-s3-source
  camel doc jsonpath

camel export --help

$ camel export --help
...

Examples:
  camel export hello.java
  camel export --runtime=spring-boot hello.java
  camel export --runtime=quarkus *
  camel export --gav=com.example:myapp:1.0 hello.java
  camel export --dry-run hello.java

camel config set --help (subcommand example)

$ camel config set --help
Usage: camel config set [-h] [--global] <configuration>
Set user configuration value
      <configuration>   Configuration parameter (ex. key=value)
  -h, --help            Display the help and sub-commands
      --global          Use global or local configuration

Examples:
  camel config set camel-version=4.10.0
  camel config set runtime=spring-boot

camel log --help

$ camel log --help
...

Examples:
  camel log hello
  camel log *
  camel log hello --tail=50

camel version list --help

$ camel version list --help
...
      --json                Output in JSON Format

Examples:
  camel version list
  camel version list --runtime=spring-boot
  camel version list --lts

The beer-source example has been replaced with aws-s3-source (a real kamelet in the default catalog).