feat(http): add plugin (#325)

plugins/http/rollup.config.mjs

@@ -0,0 +1,11 @@
+import { readFileSync } from "fs";
+
+import { createConfig } from "../../shared/rollup.config.mjs";
+
+export default createConfig({
+  input: "guest-js/index.ts",
+  pkg: JSON.parse(
+    readFileSync(new URL("./package.json", import.meta.url), "utf8")
+  ),
+  external: [/^@tauri-apps\/api/],
+});