CI: put tests into a separate script so they can be run externally (#2956)

ci/run-tests.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+cargo test \
+    --features "test-programs/test_programs" \
+    --workspace \
+    --exclude '*lightbeam*' \
+    --exclude 'wasmtime-wasi-*' \
+    --exclude 'peepmatic*' \
+    --exclude wasi-crypto \
+    $@