feat: queue retry, proxy support, CLI, and web UI

[callmedark44]

Changes

Core library improvements

• Queue retry loop: automatically retries when iqdb returns a queue position, with configurable retries via maxQueueRetries option
• Proxy support: added proxy option for HTTP/HTTPS proxy (uses hpagent)
• Cookie support: uses tough-cookie CookieJar for session persistence across retries
• onQueuePosition callback: reports queue position during retries
• Updated cheerio to v1.2.0, updated target to es2020

New CLI tool

• src/cli.ts — command-line search by URL or local file
• Usage: npx ts-node src/cli.ts <image-url|file-path>
• Accepts https_proxy/http_proxy env vars

New Web UI

• server.ts — Express-based web interface
• Run with npm start (serves on http://localhost:3333)
• File upload and URL search, service selection, tab switching (iqdb.org / 3d.iqdb.org)
• Shows queue status after 4s of waiting

Other

• Updated dev dependencies, removed unused lint/dev tooling
• Updated test to use proxy from env