feat: add network config to settings

settings.sample.json

@@ -6,6 +6,10 @@
     "pubkey": "replace-with-your-pubkey",
     "contact": "operator@your-domain.com"
   },
+  "network": {
+    "max_payload_size": 131072,
+    "remote_ip_header": "x-forwarded-for"
+  },
   "workers": {
     "count": 0
   },

src/@types/settings.ts

@@ -9,6 +9,11 @@ export interface Info {
   contact?: string
 }
 
+export interface Network {
+  max_payload_size?: number
+  remote_ip_header?: string
+}
+
 export interface EventIdLimits {
   minLeadingZeroBits?: number
 }
@@ -87,6 +92,7 @@ export interface Worker {
 
 export interface ISettings {
   info: Info
+  network?: Network
   workers?: Worker
   limits?: Limits
 }