UI: improve minikube help output by grouping into categories

[medyagh]

This PR Improves minikube help output by grouping the commands into categories (also matches kubectl's help style)
the new minikube help output will look like :

Minikube is a CLI tool that provisions and manages single-node Kubernetes clusters optimized for development workflows.

Basic Commands:
  start          Starts a local kubernetes cluster
  status         Gets the status of a local kubernetes cluster
  stop           Stops a running local kubernetes cluster
  delete         Deletes a local kubernetes cluster
  dashboard      Access the kubernetes dashboard running within the minikube cluster

Images Commands:
  docker-env     Sets up docker env variables; similar to '$(docker-machine env)'
  cache          Add or delete an image from the local cache.

Configuration and Management Commands:
  addons         Modify minikube's kubernetes addons
  config         Modify minikube config
  profile        Profile gets or sets the current minikube profile
  update-context Verify the IP address of the running cluster in kubeconfig.

Networking and Connectivity Commands:
  service        Gets the kubernetes URL(s) for the specified service in your local cluster
  tunnel         tunnel makes services of type LoadBalancer accessible on localhost

Advanced Commands:
  mount          Mounts the specified directory into minikube
  ssh            Log into or run a command on a machine with SSH; similar to 'docker-machine ssh'
  kubectl        Run kubectl

Troubleshooting Commands:
  ssh-key        Retrieve the ssh identity key path of the specified cluster
  ip             Retrieves the IP address of the running cluster
  logs           Gets the logs of the running instance, used for debugging minikube, not user code
  update-check   Print current and latest version number
  version        Print the version of minikube

Other Commands:
  completion     Outputs minikube shell completion for the given shell (bash or zsh)

Use "minikube <command> --help" for more information about a given command.

for a reference to compare, it currently looks like this (before this PR):

Minikube is a CLI tool that provisions and manages single-node Kubernetes clusters optimized for development workflows.

Usage:
  minikube [command]

Available Commands:
  addons         Modify minikube's kubernetes addons
  cache          Add or delete an image from the local cache.
  completion     Outputs minikube shell completion for the given shell (bash or zsh)
  config         Modify minikube config
  dashboard      Access the kubernetes dashboard running within the minikube cluster
  delete         Deletes a local kubernetes cluster
  docker-env     Sets up docker env variables; similar to '$(docker-machine env)'
  help           Help about any command
  ip             Retrieves the IP address of the running cluster
  kubectl        Run kubectl
  logs           Gets the logs of the running instance, used for debugging minikube, not user code
  mount          Mounts the specified directory into minikube
  profile        Profile gets or sets the current minikube profile
  service        Gets the kubernetes URL(s) for the specified service in your local cluster
  ssh            Log into or run a command on a machine with SSH; similar to 'docker-machine ssh'
  ssh-key        Retrieve the ssh identity key path of the specified cluster
  start          Starts a local kubernetes cluster
  status         Gets the status of a local kubernetes cluster
  stop           Stops a running local kubernetes cluster
  tunnel         tunnel makes services of type LoadBalancer accessible on localhost
  update-check   Print current and latest version number
  update-context Verify the IP address of the running cluster in kubeconfig.
  version        Print the version of minikube

Flags:
      --alsologtostderr                  log to standard error as well as files
  -b, --bootstrapper string              The name of the cluster bootstrapper that will set up the kubernetes cluster. (default "kubeadm")
  -h, --help                             help for minikube
      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log_dir string                   If non-empty, write log files in this directory
      --logtostderr                      log to standard error instead of files
  -p, --profile string                   The name of the minikube VM being used.  
                                         	This can be modified to allow for multiple minikube instances to be run independently (default "minikube")
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
  -v, --v Level                          log level for V logs
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging

Use "minikube [command] --help" for more information about a command.

I am open to suggestion for the group names and what belong in what group, I made the categories without putting much thinking really.

closes #4878

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[josedonizetti]

Look so much better. Thank you :)

[Doqnach]

Usability Commands sounds a bit weird to me. It feels more like Configuration Commands or something more in that line. For me usability is mostly associated with "ease of use". Those commands are not really there to ease the use of minikube but rather tailor it to your needs.

[medyagh]

Usability Commands sounds a bit weird to me. It feels more like Configuration Commands or something more in that line. For me usability is mostly associated with "ease of use". Those commands are not really there to ease the use of minikube but rather tailor it to your needs.

thank you that is a good call ! changed :)

[sharifelgamal]

Should we add ssh to Networking commands?