Add --all-features to Rust Analyzer flags

[emilk]

This stops rust-analyzer from building the web viewer, since crates/re_web_viewer_server/build.rs checks the __ci feature

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct

[Wumpf]

Not the fix that I expected. Great to have it confirmed not stomping on our webviewer files!!!
And tanks for all the warning fixes!!

[jleibs]

This is still counter-intuitive to me. I tried reading through build.rs and even there it's not obvious why adding "all-features" here would stop the web-viewer from being built.

[jleibs]

Ahh, piecing this comment together with the PR description I guess this is because "--all-features" implies the the CI "feature" which prevents the web-build.

Suggested change

	"--all-features", // --all-features is critical in order to stop crates/re_web_viewer_server/build.rs from building the web viewer
	"--all-features", // --all-features will set the `ci` feature flag, which stops crates/re_web_viewer_server/build.rs from building the web viewer

[emilk]

Also added: 5948394

[emilk]

Btw, this still works:

rm web_viewer/*.wasm
touch crates/re_viewer/src/lib.rs
cargo r -p rerun --all-features -- ../objectron.rrd --web-viewer

that's because --all-features here means all features of the rerun crate, so it won't set the __ci feature of the re_web_viewer_server crate.

Only when there is no -p/--project argument will --all-features matter (or when using it with -p re_web_viewer_server).