Add app builds controls to releaser

[joaquimrocha]

Summary

This PR:

1. creates the hl-rc- branch when calling releaser start (it's convenient)
2. adds a way to trigger app builds using the releaser script, and also to list them.

Related Issue

fixes #3991

Steps to Test

1. Use: releaser start 1.2.3 and verify it creates a branch locally for it
2. Use releaser ci app --build main to verify it triggers apps for main, test the different options
3. Use releaser ci --list to list the latest builds

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: joaquimrocha

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[Copilot]

Pull Request Overview

This PR adds CI build workflow management capabilities to the releaser tool, including the ability to trigger app build workflows for specific platforms and list/monitor recent workflow runs. Additionally, it enhances the release start process with optional branch creation.

• Added new ci app command with --build and --list subcommands for managing GitHub Actions workflows
• Added --no-branch option to the start command to optionally skip branch creation
• Implemented utility functions for triggering and retrieving GitHub Actions workflow runs

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tools/releaser/src/utils/github.ts	Adds triggerBuildWorkflows and getLatestAppRuns functions to interact with GitHub Actions API
tools/releaser/src/utils/git.ts	Adds git utility functions for branch operations: branchExists, createAndCheckoutBranch, and getCurrentBranch
tools/releaser/src/index.ts	Registers new ci app command with build and list options, and adds --no-branch option to start command
tools/releaser/src/commands/start.ts	Implements optional branch creation logic with --no-branch flag support
tools/releaser/src/commands/get-app-runs.ts	New command to fetch and display app workflow runs with multiple output formats
tools/releaser/src/commands/build.ts	New command to trigger app build workflows with platform selection and confirmation

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