Fix events CLI huh forms

[TheJolman]

closes #151

[github-actions]

godoc reference preview ready ✨

[Copilot]

Pull request overview

Fixes the events CLI subcommand flow so commands like acmcsuf-cli events get execute directly instead of dropping into an interactive menu, aligning behavior with the pre-“huh forms” CLI.

Changes:

• Replaces the interactive events menu with a standard events root command and direct subcommands.
• Refactors events CRUD commands to use the shared internal/cli/client request helper + JSON pretty-printing.
• Splits time-related helpers out of the removed utils/cli_helper.go into utils/time.go.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
internal/cli/root.go	Adds a global /health connectivity check in PersistentPreRunE.
internal/cli/client/client.go	Adds CheckConnection helper for health checks.
internal/cli/events/root.go	Introduces a proper events root command and attaches subcommands.
internal/cli/events/get.go	Simplifies get to run directly (optional --id).
internal/cli/events/delete.go	Simplifies delete to require --id and run directly.
internal/cli/events/post.go	Reworks post to use a huh form + shared HTTP client helper.
internal/cli/events/put.go	Reworks put to require --id, fetch old payload, and submit updates via shared client helper.
internal/cli/events/events.go	Removes the old interactive menu implementation.
utils/cli_helper.go	Deletes the old CLI helper grab-bag file (printing/forms/connection/etc).
utils/time.go	Adds time formatting + duration-to-end-time helper (moved from deleted helper file).

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[GaballaGit]

approoooovvvvveeeeeee, very awesome work