feat: add CLI command to get and update organizations

[Vukotije]

Closes #3634

Summary

• Add superplane organizations get command to view current organization details
• Add superplane organizations update command with --name, --description, and --versioning-enabled flags
• Register new organizations command (aliases: org, orgs) in the CLI root

Usage

superplane org get
superplane org update --name "My Org"
superplane org update --description "New description" --versioning-enabled=true

Test plan

• superplane org get returns organization details in text/json/yaml formats
• superplane org update --name "Test" updates only the name
• superplane org update --description "Desc" updates only the description
• superplane org update --versioning-enabled=false disables versioning
• superplane org update with no flags returns an error
• superplane org update --name "duplicate" with a taken name returns an error
• make lint && make check.build.app pass

Command output

[superplanehq-integration]

👋 Commands for maintainers:

• /sp start - Start an ephemeral machine (takes ~30s)
• /sp stop - Stop a running machine (auto-executed on pr close)

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[forestileao]

@Vukotije

Build is failing for this one