try to add and use shrinko8

src/server/util/shrinko8.ts

@@ -0,0 +1,18 @@
+import { execa } from "execa";
+import path from "path";
+import {fileURLToPath} from 'url';
+
+const __dirname = fileURLToPath(new URL('.', import.meta.url));
+
+const shrinko8Path = path.resolve(__dirname, "../shrinko8");
+const pico8DatPath = path.resolve(__dirname, "../../pico8.dat");
+
+export const shrinko8 = async (props: {
+	inputFile: string;
+	outputFile: string;
+	options?: string[];
+}) => {
+	const {inputFile, outputFile, options = []} = props;
+	return await execa("python3", [shrinko8Path, inputFile, outputFile, "--pico8-dat", pico8DatPath, ...options])
+}
+