chore(package): deprecate and archive in favor of codetech/laravel-vendus

[jfrosorio]

Decision: this package is being retired. Its only consumer, codetech/laravel-vendus, is absorbing the HTTP client internally (Laravel HTTP client) as part of its v2.0.0 modernization.

Tasks (in order — blocked until laravel-vendus v2.0.0 ships without this dependency)

• Add "abandoned": "codetech/laravel-vendus" to composer.json
• Add a deprecation notice at the top of the README pointing to codetech/laravel-vendus
• Tag a final patch release so Packagist picks up the abandoned flag
• Mark the package as abandoned on Packagist (web UI, maintainer account — belt and braces; the composer.json flag already covers installs)
• Archive this GitHub repository (read-only; existing installs keep working forever)

[jfrosorio]

Retirement complete: abandoned flag shipped in v1.1.2, Packagist marked abandoned with codetech/laravel-vendus as replacement, repository archived.