(feat)CLI: Change parser option to be required

[MonkeyCanCode]

Currently the sub-parser and options parsers are both not required this result the following:

# no command provided
➜  polaris git:(main) ./polaris
Traceback (most recent call last):
...
Exception: Please provide credentials via either --client-id & --client-secret or --access-token. Alternatively, you may set the environment variables CLIENT_ID & CLIENT_SECRET.

# no sub-command option provided
➜  polaris git:(main) ./polaris --profile dev catalogs
An unexpected error occurred: None is not supported in the CLI

As these should be required (not seeing an obvious use case where this should be keep as False), I created this PR to set them to be True and here is now the new output (better UX imo):

# no command provided
➜  polaris git:(cli_parser_required) ./polaris
usage: polaris [-h] [--host HOST] [--port PORT] [--base-url BASE_URL] [--client-id CLIENT_ID] [--client-secret CLIENT_SECRET] [--access-token ACCESS_TOKEN]
               [--realm REALM] [--header HEADER] [--profile PROFILE] [--proxy PROXY] [--debug]
               {catalogs,principals,principal-roles,catalog-roles,privileges,namespaces,profiles,policies} ...
polaris: error: the following arguments are required: command

# no sub-command option provided
➜  polaris git:(cli_parser_required) ./polaris --profile dev catalogs
usage: polaris catalogs [-h] {create,delete,get,list,update} ...
polaris catalogs: error: the following arguments are required: catalogs_subcommand

Checklist

• 🛡️ Don't disclose security issues! (contact [email protected])
• 🔗 Clearly explained why the changes are needed, or linked related issues: Fixes #
• 🧪 Added/updated tests with good coverage, or manually tested (and explained how)
• 💡 Added comments for complex logic
• 🧾 Updated CHANGELOG.md (if needed)
• 📚 Updated documentation in site/content/in-dev/unreleased (if needed)