feat!: Restructure custom-object commands to match design guidelines

[joe-yeager]

Description and Context

hs custom-object

• Update description to: "[BETA] Commands for managing custom objects."
• Remove all flags except for the --help flag because they don't do anything
• Fix duplicate argument issue for config and account in nested commands
• Support the plural as an alias: hs custom-objects
• Remove support for the custom alias (too generic)

hs custom-object schema

• Update description to: "Commands for managing custom object schemas."
• support custom-object schemas as an alias

hs custom-object schema list

• Update description to: "List custom object schemas."
• Remove --version flag because it's unnecessary

hs custom-object schema fetch

• Update description to: "Fetch a custom object schema."
• Remove --version flag because it's unnecessary
• Name should fall back to a prompt when not specified
• dest should fall back to a prompt when not specified

hs custom-object schema fetch-all

• dest should fall back to a prompt when not specified

hs custom-object schema create

• Add a period to the end of the description
• Remove --version flag because it's unnecessary
• definition should be renamed to path and should be moved to be a flag instead of a positional

hs custom-object schema update

• Add a period to the end of the description
• definition should be renamed to path and should be moved to be a flag instead of a positional

hs custom-object schema delete

• Add a period to the end of the description
• Remove --version flag because it's unnecessary
• Should list available schemas in a prompt when name is not included
• should prompt for confirmation before deleting and support a --force flag to bypass the prompt

hs custom-object create

• Add a period to the end of the description
• definition should be renamed to path and should be moved to be a flag instead of a positional
• Remove --version flag because it's unnecessary
• Name should fall back to a prompt when not specified