Validate that dbdata dir is of the correct PG version when starting.

I have a data directory that I initialized with `initdb`. When I try to run the example connecting to that data directory, the Promise returned by `db.query(...)` never resolves. Here's the code:

```ts
import { PGlite } from "@electric-sql/pglite";

const db = new PGlite("./pgdata");

await db.waitReady;

const result = await db.query("select 'Hello world' as message;");

console.log(result);

await db.close();
```

**EDIT**: I just realized that this is most likely because there is a difference in the version of postgres that created the dbs:

```
// created by installed initdb command on my machine
PostgreSQL 16.0 on aarch64-apple-darwin21.6.0, compiled by Apple clang version 14.0.0 (clang-1400.0.29.102), 64-bit

// created by pglite
PostgreSQL 15devel on aarch64-apple-darwin22.6.0, compiled by emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.25 (febd44b21ecaca86e2cb2a25ef3ed4a0a2076365), 32-bit
```

It would be nice to include an error for this type of thing. Are there plans for this to be resolved?