Env logger feature

[mcmah309]

Closes #3774

[jkelleyrtp]

If we support the env filter, then we should support it for all our platforms:

• mac
• win
• linux
• ios
• android
• web

The last three are the hardest but definitely quite important.

I believe for ios and android we just need to re-export the RUST_LOG env var into the spawned processes:

https://github.com/DioxusLabs/dioxus/blob/main/packages/cli/src/serve/handle.rs#L78-L109

For these two platforms, env vars don't automatically inherit, so they have their own bespoke methods for receiving env.

For WASM, I'd like us to invent a way of passing env vars into wasm (allowing env::var in WASM) but that's outside the scope of this PR, so it's fine to leave WASM unimplemented.

I would also like to make this the default behavior of the logger. We probably don't need to feature-gate it and instead just make the dioxus_logger crate runtime configurable instead.

[mcmah309]

Logging on android seems to be broken, so I could not get it to work there #3971 and I did not test IOS

[jkelleyrtp]

Awesome! I think we might have a conflict with dx serve and the child colliding since both rely on env logging, but that shouldn't be a huge issue

Edit: can you fix the clippy error?

[jkelleyrtp]

clippy!