Fix ANSI colors in chrome and tracy traces

[rparrett]

Objective

Fix ANSI colors in chrome and tracy traces, at the cost of losing ANSI colors in logs to stdout when trace_chrome or trace_tracy features are used.

Note: enabling trace features alters the output logs in other undesirable ways. I think we might need separate subscribers or something to fix that.

Fixes #3563

Solution

Add .with_ansi(false) to the "fmt layer" when trace_chrome or trace_tracy are enabled.

I'd appreciate someone checking the tracy output, as I wasn't able to test that (except to see that bevy still builds with that feature)

[mockersf]

ok in tracy

[rparrett]

Note: adding the trace_chrome or trace_tracy feature also affects logging output to stdout in other ways. This PR doesn't address that. Just removes the ANSI colors so they don't end up in the other traces.

With trace_chrome or trace_tracy:

2022-01-08T00:48:40.761898Z  INFO bevy_app:frame:stage{name=PostUpdate}:prepare_systems:system{name="bevy_diagnostic::log_diagnostics_plugin::LogDiagnosticsPlugin::log_diagnostics_system"}: bevy diagnostic: frame_count                     :   98.000000  (avg 98.000000)

Without:

2022-01-08T00:49:02.431899Z  INFO bevy diagnostic: frame_count                     :   75.000000  (avg 75.000000)

[alice-i-cecile]

I'm on board; those color symbols are unfortunate.

[rparrett]

Closing because I can't reproduce the issue anymore