Added auth and basic chat system

config/example-settings.json

@@ -0,0 +1,33 @@
+{
+    "branding":{
+        "name":"AiThingy"
+    },
+    "auth_mode":"code",
+    "default_role":"none",
+    "default_permissions":[
+        "createChat"
+    ],
+    "auth_codes":[
+        {
+            "name":"code1",
+            "code":"a1b2c3",
+            "role":"user"
+        },
+        {
+            "name":"code2",
+            "code":"a1b2c3",
+            "role":"admin"
+        },
+        {
+            "name":"code3",
+            "code":"a1b2c3",
+            "role":"guest"
+        }
+    ],
+    "oauth_login":"true",
+    "github_oauth":{
+        "enabled":"true",
+        "client_id":"client_id",
+        "client_secret":"client_secret"
+    }
+}