Support command aliases

[remkop]

For example, the JFrog CLI supports short form and long form for many subcommands:

 ~/jfrog rt --help
NAME:
   jfrog rt - Artifactory commands

USAGE:
   jfrog rt command [command options][arguments...]

COMMANDS:
   config, c                    Configure Artifactory details.
   use                          Set the active Artifactory server by its ID.
   upload, u                    Upload files.
   download, dl                 Download files.
   move, mv                     Move files.
   copy, cp                     Copy files.
   delete, del                  Delete files.
   search, s                    Search files.
   set-props, sp                Set properties on existing files in Artifactory.
   build-publish, bp            Publish build info.
   build-collect-env, bce       Capture environment variables.
   build-add-git, bag           Capture git revision and remote url.
   build-scan, bs               This command is used to perform Xray scan on a build.
   build-clean, bc              This command is used to clean (remove) build info collected locally.
   build-promote, bpr           This command is used to promote build in Artifactory.
   build-distribute, bd         This command is used to deploy builds from Artifactory to Bintray, and creates an entry in the corresponding Artifactory distribution repository specified.
   git-lfs-clean, glc           Clean files from a Git LFS repository. The command deletes all files from a Git LFS repository that are no longer available in a corresponding Git repository.
   mvn                          Run Maven build.
   mvn-config, mvnc             Generate Maven build configuration.
   gradle                       Run Gradle build.
   gradle-config, gradlec       Generate Gradle build configuration.
   help, h                      Shows a list of commands or help for one command

OPTIONS:
   --help, -h   show help