Introduces the 'create' subcommand for agent tasks, allowing users to create agent jobs via the Copilot API. Adds job API client methods, job model, and polling logic to retrieve associated pull requests. Includes tests for various job creation scenarios.
Introduces ListSessionsForRepo to CapiClient and CAPIClient, enabling listing agent sessions for a specific repository. Updates the list command and tests to support repo override and repo-scoped session queries, including error handling and test coverage for repo resolution.
Replaces linear search with a map for associating sessions with pull requests, improving performance and simplifying code in hydrateSessionPullRequests.
Introduces a new 'list' subcommand under agent-task for listing agent tasks. Implements a Copilot API client for fetching agent sessions and hydrating them with pull request data. Updates PullRequest and PRRepository types to support new fields. Adds dependencies for msgpack and tagparser.
Co-Authored-By: Babak K. Shandiz <babakks@github.com>
