Add GH actions (#37)

* Add GH actions

* Install nightly, test Rust seperately

* Nightly for tests

* Pin nightly version... maybe this works?

* Revert attempted version fix

* Re-try nightly pinning...

* Try without...

* Revert stable experiment

* Run action on PR

* Action only on PR

* Rename push.yml to pr.yml

* Bump deps, update actions

* Bump backtrace (maybe this helps?)

* Don't test rust alongside wasm (split)

scripts/test-rust.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -e
+
+echo "*** Testing packages"
+cd packages
+
+PACKAGES=( $(ls -1d *) )
+
+for PKG in "${PACKAGES[@]}"; do
+  if [ -f "$PKG/package.json" ]; then
+    echo "*** Testing $PKG"
+    cd $PKG
+
+    echo "*** Testing Rust"
+    RUST_BACKTRACE=full rustup run nightly cargo test --release -- --nocapture
+
+    cd ..
+  fi
+done
+
+cd ..