Rollup merge of #107718 - Zoxc:z-time, r=nnethercote

Add `-Z time-passes-format` to allow specifying a JSON output for `-Z time-passes`

This adds back the `-Z time` option as that is useful for [my rustc benchmark tool](https://github.com/Zoxc/rcb), reverting https://github.com/rust-lang/rust/pull/102725. It now uses nanoseconds and bytes as the units so it is renamed to `time-precise`.

compiler/rustc_codegen_ssa/src/base.rs

@@ -786,6 +786,7 @@ pub fn codegen_crate<B: ExtraBackendMethods>(
             total_codegen_time,
             start_rss.unwrap(),
             end_rss,
+            tcx.sess.opts.unstable_opts.time_passes_format,
         );
     }