Add per-engine UCI option profiles

[binarylab2022-del]

Objective

Allow imported UCI engines to use saved option profiles during analysis and
benchmarking.

Expected work

• discover options through the UCI handshake;
• support common spin, check, combo, string, and button options;
• save profiles per engine executable;
• apply options before isready;
• display invalid or rejected options clearly;
• document the profile storage format.

Acceptance criteria

• users can save and reuse settings such as Hash and Threads;
• profiles remain isolated between engines;
• missing engines or unsupported options fail safely;
• benchmark results record the selected profile.