[performance and security] should support `__attribute__((__deprecated__(MSG)))`

Input C/C++ Header

#define DEPRECATE(f) __attribute__((__deprecated__("Use '" #f "' instead")))

DEPRECATE(bar)
int foo();

int bar();

Bindgen Invocation

bindgen::Builder::default()
    .header("input.h")
    .generate()
    .unwrap()

Actual Results

extern "C" {
    pub fn foo() -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn bar() -> ::std::os::raw::c_int;
}

Expected Results

bindgen mapping deprecation to rust, and should be default option

extern "C" {
   {{RUST_DEPRECATION}}
    pub fn foo() -> ::std::os::raw::c_int;
}
extern "C" {
    pub fn bar() -> ::std::os::raw::c_int;
}

Start with the input.h example and the bindgen::Builder invocation shown in the issue, then reproduce the generated bindings. Done means the deprecated foo declaration receives the Rust deprecation mapping while bar remains unchanged, with the behavior enabled by default.