windows: statically link the CRT to remove vcruntime dependency

Add a .cargo/config.toml that sets target-feature=+crt-static for the
i686, x86_64, and aarch64 MSVC targets so bat.exe no longer depends on
the vcruntime DLL. Mirrors the fix applied to fd in sharkdp/fd#1891.

Closes #3634

CHANGELOG.md

@@ -42,6 +42,7 @@
 - Bump MSRV to 1.88, update `time` crate to 0.3.47 to fix RUSTSEC-2026-0009, see #3581 (@NORMAL-EX)
 - Allow home and end keys to be used with builtin pager, see #3651 (@keith-hall)
 - Builtin syntax mapping: cleanup matcher glob parsing logic #3652 (@cyqsimon)
+- Statically link the CRT for MSVC builds via Cargo config to avoid runtime DLL dependencies. Closes #3634, see #3692 (@barry3406)
 
 ## Syntaxes