libghostty-vt-sys (Turborepo patch)

Vendored copy of libghostty-vt-sys 0.2.0 with a Windows MSVC static-linking fix.

Upstream 0.2.0 emits static=ghostty-vt, which MSVC resolves to ghostty-vt.lib — the DLL import library rather than the static archive. That leaves turbo.exe depending on ghostty-vt.dll at runtime.

This patch links ghostty-vt-static.lib on Windows MSVC instead, matching vercel/turborepo#13171.

Activated via [patch.crates-io] in the workspace root Cargo.toml. Remove this crate once upstream libghostty-vt-sys includes the same fix.