feat: add GuangYaPan offline download

[okatu-loli]

Summary

• add GuangYaPan cloud collection API support for resolve/create/list/delete offline tasks
• register GuangYaPan as an offline download tool
• support direct downloads to GuangYaPan targets and temp-dir transfer for other targets
• add backend setting endpoint for GuangYaPan temp dir

Related

• Frontend PR: feat: add GuangYaPan offline download settings alist-web#303

Verification

• go test ./drivers/guangyapan ./internal/offline_download/guangyapan ./internal/offline_download/tool ./server/handles
• go test -vet=off ./internal/offline_download/... ./drivers/guangyapan ./server/handles
• verified GuangYaPan resolve_res/list_task APIs with local storage credentials without creating a new task