feat: New completion features

[Ash258]

• All config options

        'proxy'
        'debug'
        'default-architecture'
        'NO_JUNCTIONS'
        'MSIEXTRACT_USE_LESSMSI'
        '7ZIPEXTRACT_USE_EXTERNAL'
        'SCOOP_REPO'
        'SCOOP_BRANCH'
        'show_update_log'
        'virustotal_api_key:'
        'aria2-enabled'
        'aria2-retry-wait'
        'aria2-split'
        'aria2-max-connection-per-server'
        'aria2-min-split-size'
        'aria2-options'

• [x] Global apps intelisense
• [ ] Available specific versions <appname>@
• [ ] All shovel utils --additional-option completion
• [ ] bucket/manifest syntax support
• [ ] bucket/manifest@version syntax support
• [ ] Tests
• [ ] Investigate how to easily "install" completion module into $env:SCOOP\modules and then allow importing it
  • Link it as $env:SCOOP\modules\Scoop-Completion -> $env:SCOOP_HOME\supporting\completion❓❓
• [ ] zsh completion
• [ ] Investigate native powershell completion with Register-ArgumentCompleter