change options, drop svg_out_path in favor of outputs list

packages/action/__tests__/outputsOptions.spec.ts

@@ -0,0 +1,11 @@
+import { parseEntry } from "../outputsOptions";
+
+[
+  "path/to/out.gif",
+
+  "/out.svg?color_snake=orange&color_dots=#bfd6f6,#8dbdff,#64a1f4,#4b91f1,#3c7dd9",
+].forEach((entry) =>
+  it(`should parse ${entry}`, () => {
+    expect(parseEntry(entry)).toMatchSnapshot();
+  })
+);