Add rustfmt.toml

Signed-off-by: Dave Tucker <dave@dtucker.co.uk>

ebpf/rustfmt.toml

@@ -0,0 +1,4 @@
+unstable_features = true
+reorder_imports = true
+imports_granularity = "Crate"
+

rustfmt.toml

@@ -0,0 +1,4 @@
+unstable_features = true
+reorder_imports = true
+imports_granularity = "Crate"
+

xtask/src/build_ebpf.rs

@@ -1,5 +1,4 @@
-use std::path::PathBuf;
-use std::process::Command;
+use std::{path::PathBuf, process::Command};
 
 use structopt::StructOpt;