analyze: print next-step guidance when the database is written

When analyze finishes it prints the processed-file counts and the total time, but nothing about what to do next:

Finalizing database. Successfully processed files: 2, Failed files: 0, Files without TypeTrees: 0, Ignored files: 0

Total time: 0.256 s

In a usability experiment, an AI agent given only the binary discovered the built-in views (object_view, view_breakdown_by_type, ...) by running .tables in sqlite3 and called it "a lucky/pleasant discovery, not something --help mentioned". For someone using the downloaded binary, stdout plus the one URL in --help is the entire discovery surface.

Proposal: after finalizing, print a short next-step hint, something like:

Database written to database.db. Start with the object_view and view_breakdown_by_type views.
Schema reference: https://github.com/Unity-Technologies/UnityDataTools/blob/main/Documentation/analyzer.md

The URL should be version-pinned once the --help documentation link is (tracked separately).

Bắt đầu từ output hoàn tất của lệnh analyze và lần theo code in ra số lượng file đã xử lý cùng tổng thời gian. Thêm hướng dẫn được đề xuất về database, view và schema-reference sau khi database được ghi, rồi chạy analyze trên một input mẫu để xác minh nội dung stdout và URL.