docs: add SB6141, Hitron CODA-56, Sagemcom F@st 3896 to hardware table

Author: itsDNNS

README.md

@@ -161,10 +161,13 @@ Open `http://localhost:8765` — no setup required.
 | | Status | Notes |
 |---|---|---|
 | **Arris CM3500B** | ✅ Fully supported | HTTPS enforced, mixed DOCSIS 3.0/3.1 |
+| **Arris SB6141** | ✅ Fully supported | DOCSIS 3.0 standalone |
 | **Arris SURFboard** (S33, S34, SB8200) | ✅ Fully supported | HNAP1 API |
 | **Arris Touchstone CM8200A** | ✅ Fully supported | ISP-branded DOCSIS 3.1 |
 | **AVM Fritz!Box Cable** (6490, 6590, 6591, 6660, 6690) | ✅ Fully supported | |
+| **Hitron CODA-56** | ✅ Fully supported | DOCSIS 3.1 |
 | **Netgear CM3000** | ✅ Fully supported | DOCSIS 3.1 standalone |
+| **Sagemcom F@st 3896** | ✅ Fully supported | JSON-RPC API |
 | **Unitymedia Connect Box** (CH7465) | ✅ Fully supported | |
 | **Vodafone Station** (CGA4233, TG3442DE) | ✅ Fully supported | Bridge mode compatible |
 | **Technicolor TC4400** | ✅ Fully supported | |