Introduces a BaseBranch field to CreateOptions and updates the job creation flow to include the base branch in the payload if specified. The CapiClient and related methods are updated to accept and handle the baseBranch parameter, and tests are added to verify correct behavior when a base branch is provided.
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.
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>
