chore(util/test.sh) conditionally build SDKs

SDKs test files will have `language_sdk` as part of their name, e.g.:
- `001-rust_sdk`
- `002-go_sdk`
- `003-assemblyscript_sdk`

As such, filter examples from SDKs can be conditionally compiled based
on the presence of the aforementioned patterns in the script parameters.

util/test.sh

@@ -94,7 +94,14 @@ if [[ "$CI" == 'true' ]]; then
     export NGX_BUILD_FORCE=1
 fi
 
-$NGX_WASM_DIR/util/sdk.sh -S go --build
+case "$PARAMS" in
+    *assemblyscript_sdk*)
+        $NGX_WASM_DIR/util/sdk.sh -S assemblyscript --build
+    ;;
+    *go_sdk*)
+        $NGX_WASM_DIR/util/sdk.sh -S go --build
+    ;;
+esac
 
 args=()