ci: run tinygo test for known-working packages

These packages are known to pass tests with `tinygo test`. It's still a
very short list, but hopefully this list can be expanded to eventually
cover most or all of the standard library.

.circleci/config.yml

@@ -108,6 +108,7 @@ commands:
       - run: go test -v -tags=llvm<<parameters.llvm>> ./cgo ./compileopts ./interp ./transform .
       - run: make gen-device -j4
       - run: make smoketest XTENSA=0
+      - run: make tinygo-test
       - run: make wasmtest
       - save_cache:
           key: go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}