feat: add advanced multithreading banking system skeleton

src/main/java/dev/banking/model/Transaction.java

@@ -0,0 +1,39 @@
+package dev.banking.model;
+
+public class Transaction {
+
+    private final TransactionType type;
+
+    private final int sourceAccountId;
+    private final int targetAccountId;
+
+    private final int amount;
+
+    public Transaction(
+            TransactionType type,
+            int sourceAccountId,
+            int targetAccountId,
+            int amount
+    ) {
+        this.type = type;
+        this.sourceAccountId = sourceAccountId;
+        this.targetAccountId = targetAccountId;
+        this.amount = amount;
+    }
+
+    public TransactionType getType() {
+        return type;
+    }
+
+    public int getSourceAccountId() {
+        return sourceAccountId;
+    }
+
+    public int getTargetAccountId() {
+        return targetAccountId;
+    }
+
+    public int getAmount() {
+        return amount;
+    }
+}