fix: add downstream C++ toolchain configuration for Linux CI compatibility

- Add cc_configure_extension with local_config_cc repository setup
- Add rules_cc 0.2.0 compatibility_proxy extension for bzlmod
- Resolves C++ toolchain resolution failures in Linux CI environments
- Fixes "No matching toolchains found" error for Rust binary linking
- Ensures cross-platform compatibility between macOS (implicit) and Linux (explicit) toolchain detection

Tested: file_operations_component builds successfully (250 actions)

Author: avrabe

MODULE.bazel

@@ -19,7 +19,11 @@ bazel_dep(name = "rules_cc", version = "0.2.0")
 bazel_dep(name = "bazel_skylib", version = "1.8.1")
 
 # Enable C++ toolchain auto-configuration for cross-platform support
-cc_configure = use_extension("@rules_cc//cc:extensions.bzl", "cc_configure")
+cc_configure = use_extension("@rules_cc//cc:extensions.bzl", "cc_configure_extension")
+use_repo(cc_configure, "local_config_cc")
+
+# Add compatibility proxy repository for rules_cc 0.2.0 (required for bzlmod)
+cc_compatibility = use_extension("@rules_cc//cc:extensions.bzl", "compatibility_proxy")
 
 # WebAssembly and component support
 bazel_dep(name = "rules_rust", version = "0.62.0")