feat: cookie-jar по хосту, CLI omni add для своих источников, README про ключи/прокси/куки/свой сервер

omni/net.py

@@ -126,6 +126,9 @@ def get(url, headers=None, timeout=None, json_mode=False):
         h["Accept"] = "application/json"
         h["Content-Type"] = "application/json"
     h.update(headers or {})
+    ck = config.cookies_for(host)
+    if ck:
+        h["Cookie"] = ck
 
     first = _try_httpx(url, h, timeout, None)
     if first.ok and not first.blocked: