Add initial project with simple chat using openchat-3.5-0106.Q4_K_M.gguf model

src/main/java/com/pablotj/ia/chat/boot/PromptBuilder.java

@@ -0,0 +1,33 @@
+package com.pablotj.ia.chat.boot;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PromptBuilder {
+
+    private final String systemPrompt;
+    private final List<String> turns = new ArrayList<>();
+
+    public PromptBuilder(String systemPrompt) {
+        this.systemPrompt = systemPrompt;
+    }
+
+    public void user(String message) {
+        turns.add("GPT4 Correct User: " + message + "<|end_of_turn|>");
+    }
+
+    public void assistant(String message) {
+        turns.add("GPT4 Correct Assistant: " + message + "<|end_of_turn|>");
+    }
+
+    public String build() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(systemPrompt).append("<|end_of_turn|>\n");
+        for (String turn : turns) {
+            sb.append(turn).append("\n");
+        }
+        // Deja el último turno preparado para que el modelo continúe como "Assistant"
+        sb.append("GPT4 Correct Assistant: ");
+        return sb.toString();
+    }
+}