Multi-Team: Add teams inspect CLI command to display team resources

[SameerMesiah97]

Description

This change introduces a new airflow teams inspect CLI command for displaying the resources associated with a team.

The command provides a consolidated view of a team's DAG bundle associations, pools, connections, and variables, making it easier to understand which resources belong to a team and to troubleshoot or prepare administrative operations.

Rationale

As multi-team deployments grow, it becomes useful to inspect a team's resources from a single command rather than querying each resource type independently.

The teams inspect command provides administrators with a convenient overview of team-owned resources, complementing existing management commands such as teams verify and teams delete.

Tests

Added unit tests verifying that:

• Inspecting a team with associated resources displays its DAG bundles, pools, connections, and variables.
• Inspecting a team with no associated resources reports empty sections while displaying the default pool.
• Inspecting a nonexistent team exits with an appropriate error.

Documentation

Added CLI help text describing the new teams inspect command.

Backwards Compatibility

This change is additive. Existing behaviour is unchanged unless the new teams inspect command is explicitly invoked.

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Generated-by: [GPT 5.5] following the guidelines