Add janky nginx config with workaround for proxy protocol

hosts/web-public-2/virtualHosts/matrix.nekover.se.nix

@@ -0,0 +1,33 @@
+{ ... }:
+{
+  services.nginx.virtualHosts."matrix.nekover.se" = {
+    forceSSL = true;
+    enableACME = true;
+    listen = [
+      {
+        addr = "0.0.0.0";
+        port = 8448;
+        ssl = true;
+      }
+      {
+        addr = "[::]";
+        port = 8448;
+        ssl = true;
+      }
+      {
+        addr = "localhost";
+        port = 8443;
+        ssl = true;
+        proxyProtocol = true;
+      }
+    ];
+    locations."~ ^(/_matrix|/_synapse/client)" = {
+      proxyPass = "http://matrix.vs.grzb.de:8008";
+      extraConfig = ''
+        # Nginx by default only allows file uploads up to 1M in size
+        # Increase client_max_body_size to match max_upload_size defined in homeserver.yaml
+        client_max_body_size 500M;
+      '';
+    };
+  };
+}