feat: implement bl project image (GET /api/v2/projects/{projectIdOrKey}/image)

[23prime]

Type

feat

Summary

Implement bl project image <projectIdOrKey> command to download the project icon image.

Changes

• Add GET /api/v2/projects/{projectIdOrKey}/image support in src/api/project.rs
• Add bl project image <projectIdOrKey> --output <path> subcommand in src/cmd/project/image.rs
• Update docs: website/docs/commands.md, website/i18n/ja/...

Notes

Returns binary image data. Use --output to specify the save path.