- added train

- refactored CdTrain

src/rbm/status.py

@@ -0,0 +1,14 @@
+class Status:
+	def __init__(self):
+		self.progress = 0
+		self.err = -1.0
+		self.err_total = -1.0
+		self.l1 = -1.0
+		self.l2 = -1.0
+
+	def on_change(self) -> bool:
+		print(self)
+		return True
+
+	def __repr__(self):
+		return f"Progress: {self.progress}"