Add a shortcut integration [sc-25996]

[vanilevsky]

Summary

The development work was primarily focused on integrating a new feature that allows users to extract and display Shortcut story IDs from GitHub pull requests or branch names. This was achieved by introducing new functions in the 'shortcut' package, updating the 'opts' struct, and updating the documentation.

Changes

• README.md
  • Added a new option, --shortcut-url, in the description of the description command.
• cmd/description/main.go
  • Added functionality to extract and display Shortcut story IDs from GitHub pull request title or branch name.
  • Added functionality to generate a link to the corresponding Shortcut story if a Shortcut base URL is provided.
  • Updated the 'opts' struct to include a new field for the Shortcut base URL.
  • Rearranged import statements and added a new import for the 'shortcut' package.
• shortcut/shortcut.go
  • Introduced a new function, 'ExtractShortcutStoryId', to extract a Shortcut story ID from a string using a regular expression.
  • Introduced another new function, 'GenerateShortcutStoryUrl', to generate a Shortcut story URL using a base URL and a ticket ID.
• shortcut/shortcut_test.go
  • Introduced two new test functions, 'TestExtractShortcutStoryID' and 'TestGenerateShortcutStoryURL', to test the new functions in the 'shortcut' package.

Impact

The changes will enhance the tool's functionality by allowing users to generate Shortcut links in the description, extract and display Shortcut story IDs, and generate a Shortcut story URL using a base URL and a ticket ID. This will improve the tool's usability and efficiency.