Finish feature update

[Vabiel]

No description provided.

[Copilot]

Pull request overview

This PR bumps the alex CLI version to 1.11.0 and adds support for generating and retrofitting changelog issue references as markdown links when an issue_url base is configured.

Changes:

• Add optional issue_url config and use it to append issue references as [#N](base/N) in feature finish changelog entries.
• Introduce alex changelog update-issue-links (alias cl uil) to convert existing plain (#N) references in CHANGELOG.md into markdown links.
• Bump package version and update documentation/examples and the package changelog.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pubspec.yaml	Bumps package version to 1.11.0.
lib/src/version.dart	Updates generated packageVersion constant to 1.11.0.
lib/src/config.dart	Adds issueUrl getter backed by issue_url config key.
lib/src/changelog/changelog.dart	Adds linkIssueReferences() and extends entry-append helpers to optionally generate linked issue suffixes.
lib/runner/alex_command_runner.dart	Registers the new top-level changelog command.
lib/commands/feature/finish_command.dart	Passes configured issue_url through to changelog entry creation.
lib/commands/changelog/update_issue_links_command.dart	Implements update-issue-links subcommand to rewrite plain issue references.
lib/commands/changelog/changelog_command.dart	Adds changelog command namespace and wires subcommands.
CLAUDE.md	Documents new lib/commands/changelog/ command hierarchy entry.
CHANGELOG.md	Adds 1.11.0 release notes describing new issue-linking behavior and command.
alex.yaml	Documents and adds issue_url example config key.