Mobile app PoC (#281)

Initial checkin of mobile "native" app

web/syscalls/fetch.ts

@@ -0,0 +1,12 @@
+import type { SysCallMapping } from "../../plugos/system.ts";
+import { proxySyscalls } from "../../plugos/syscalls/transport.ts";
+import type { Space } from "../../common/spaces/space.ts";
+
+export function sandboxFetchSyscalls(space: Space): SysCallMapping {
+  return proxySyscalls(
+    [
+      "sandboxFetch.fetch",
+    ],
+    (ctx, name, ...args) => space.proxySyscall(ctx.plug, name, args),
+  );
+}