added some docstrings to API, and added to miner types

miners/whatsminer/M31.py

@@ -0,0 +1,26 @@
+from API.btminer import BTMinerAPI
+from miners import BaseMiner
+
+
+class BTMinerM31(BaseMiner):
+    def __init__(self, ip: str) -> None:
+        api = BTMinerAPI(ip)
+        super().__init__(ip, api)
+
+    def __repr__(self) -> str:
+        return f"M31 - BTMiner: {str(self.ip)}"
+
+    async def get_hostname(self) -> str:
+        return "BTMiner Unknown"
+
+    async def send_config(self):
+        return None  # ignore for now
+
+    async def restart_backend(self) -> None:
+        return None
+
+    async def reboot(self) -> None:
+        return None
+
+    async def get_config(self) -> None:
+        return None