Experiment: WinDivert-based host override

In scope of #3, we can try overriding the hosts using [WinDivert](https://reqrypt.org/windivert.html).,

**Pros:**
- doesn't require any persistent changes on disk (neither `hosts` file nor game binaries),
- offers a more flexible approach to host redirection (e.g. we can change the destination port, as well as have general control over the game traffic).

**Cons:**
- less stable (requires a kernel driver, of all things!),
- much more complex than simply changing a line in a text `hosts` file.