Re-org SDK dir (#4690)

sdk/bpf/rust/clean.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+if [ "$#" -ne 1 ]; then
+    echo "Error: Must provide the full path to the project to build"
+    exit 1
+fi
+if [ ! -f "$1/Cargo.toml" ]; then
+      echo "Error: Cannot find project: $1"
+    exit 1
+fi
+
+cd "$1"
+
+set -e
+
+echo "Cleaning $1"
+cargo clean