#34 fix: exitor opens when passing through `e`

• build: add version information and version flag
• fix: editor opens when passing through e - fixes #32 - failure due to continuation of subsequent steps rather than early exit - test suite updated

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Summary by cubic

Fixes interactive create flow so typing "e" opens the editor and skips further prompts; also adds a version flag with build-time version injection. Fixes #32.

• Bug Fixes

  • Skip labels/assignees/milestone prompts when body is "e" so the editor opens without extra input.
  • Return an error if the editor process fails.
  • Tests updated to ensure prompts are skipped and no hang occurs.

• New Features

  • Adds --version via Cobra by setting rootCmd.Version.
  • Injects version at build time with GoReleaser -X github.com/jamesjohnsdev/issues/cmd.Version={{.Version}}; defaults to dev for local builds.