Refactor and remove sqlite and replace with MySQL

internal/models/prediction.go

@@ -0,0 +1,15 @@
+package models
+
+import (
+	"database/sql"
+)
+
+type NextMachineBallsetPrediction struct {
+	NextDrawDate         string
+	CurrentMachine       string
+	EstimatedNextMachine string
+	MachineTransitionPct float64
+	CurrentBallset       sql.NullString
+	EstimatedNextBallset sql.NullString
+	BallsetTransitionPct sql.NullFloat64
+}