ci: make release vscode manual step

[benfdking]

No description provided.

[Copilot]

Pull Request Overview

This pull request enables a manual release step for the VSCode extension by adding workflow_dispatch inputs and new validation steps while also replacing the automatic version extraction.

• Added workflow_dispatch trigger with a required version input
• Introduced a branch check and a semantic version format validation step
• Updated steps to use the manual input version for updating package.json and publishing the extension

Comments suppressed due to low confidence (1)

.github/workflows/release_extension.yaml:25

• [nitpick] Consider adding a comment explaining the regex for semantic version validation to help future maintainers understand its purpose and limitations.

          if ! [[ $version =~ ^[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?(\+[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$ ]]; then