feat: DorkNet.Quest, a sideload patcher for the 2023 Quest client

Patches the Quest build of Rec Room 2023.03.21 (20230317 / 2128210, the
same appVersion as the PC client) to connect to a DorkNet server, using
one native hook library loaded via DT_NEEDED on libmain.so.

- host rewrite onto <svc>.<ServerHost> or a {service}-dev.example.com template
- Photon app ids and region injection (PhotonRegion must match PC)
- TLS / pinning / image-signature bypass, integrity callbacks neutralised
- no-Meta-account build; the server treats platform id 0/1/blank as a
  placeholder and keys those accounts by device id
- build.ps1 -Obb packages a DorkNet-<ver>.xapk with one-command
  installers for Windows and macOS/Linux; app is named via AppName
- README, docs/quest.md and NOTICE updated; credits RecFlare and
  And64InlineHook (MIT)

Tested on a Quest 2: all hooks arm, requests reach the dev server.

docs/architecture.md

@@ -50,6 +50,7 @@ DorkNet.sln
 | `DorkNet.Services.Moderation` | Bug reporting, player reporting, sanitize, path-routed admin API, testcase routes | .NET 9 |
 | `DorkNet.Services.Web` | Public site, admin static host, same-origin admin browser API, feed static host, site API | .NET 9 |
 | `DorkNet.ClientMod` | MelonLoader 0.6.x IL2CPP mod — the client patcher, JSON config | .NET 6 |
+| `DorkNet.Quest` | native hook library + build scripts for the Meta Quest client | C++/arm64 |
 
 `ClientMod` applies the client-side patches needed to point the 2020
 watch at a DorkNet server: URI rewrite (`.rec.net` → configured apex),
@@ -59,6 +60,13 @@ MelonLoader 0.6.x and reads its settings from a JSON config under
 same config: Desktop Screen-Share FPS, RRO quest party size, and Rec
 Royale night mode (see the README and `recroom-2023-scene-moods.md`).
 
+`DorkNet.Quest` does the same jobs for the Meta Quest (Android/IL2CPP)
+2023.03.21 client, where there is no MelonLoader: one native library
+(`libdorknet.so`) is injected via a `DT_NEEDED` entry on `libmain.so`
+and installs arm64 inline hooks (host rewrite, Photon ids, TLS/pin and
+image-signature bypass, integrity-callback neutralisation). See
+[`quest.md`](quest.md).
+
 ---
 
 ## Server folder layout