Env logger feature (#3775)

* feat: Expose and configure tracing env-filter

* doc: Add env-filter doc part

* chore: Remove conditional import

* Move logger env-filter feature out of feature flag

* Update logger env filtering

* Add RUST_LOG to the process from the cli

* Typo

* fix clippy

* clippy

packages/logger/README.md

@@ -64,9 +64,8 @@ fn App() -> Element {
     p { "hi" }
   }
 }
-
-
 ```
+For non-wasm targets, runtime filtering is based on the `RUST_LOG` environment variable. e.g. for `RUST_LOG=none,crateName=trace` only logs trace and above for `crateName` will be captured. See [here](https://docs.rs/tracing-subscriber/latest/tracing_subscriber/filter/struct.EnvFilter.html#directives) for syntax. For crates with `-` in the name, these need to be changed to `_` in `RUST_LOG`.
 
 ## Platform Support
 Dioxus logger will eventually support every target that Dioxus does. Currently mobile and TUI are not supported.