fix: set default-run = "dial9-viewer" in dial9-viewer (#207)

Without this, `cargo run -p dial9-viewer` is ambiguous between the
`dial9-viewer` and `dev-server` binaries, and may try to launch the
dev server (which requires the `dev-server` feature).

Closes #203

Author: rcoh

dial9-viewer/Cargo.toml

@@ -5,6 +5,7 @@ edition.workspace = true
 license.workspace = true
 repository.workspace = true
 description = "CLI trace viewer and S3 browser for dial9-tokio-telemetry"
+default-run = "dial9-viewer"
 
 [features]
 dev-server = ["dep:s3s", "dep:s3s-fs", "dep:s3s-aws", "dep:tempfile"]