feature: Add support Qwen3-coder model (#221)

Add support Qwen3-coder model
Rename template for old

templates/Qwen25CoderFIM.hpp

@@ -0,0 +1,60 @@
+/* 
+ * Copyright (C) 2024-2025 Petr Mironychev
+ *
+ * This file is part of QodeAssist.
+ *
+ * QodeAssist is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * QodeAssist is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with QodeAssist. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "llmcore/PromptTemplate.hpp"
+#include <QJsonArray>
+
+namespace QodeAssist::Templates {
+
+class Qwen25CoderFIM : public LLMCore::PromptTemplate
+{
+public:
+    QString name() const override { return "Qwen2.5 Coder FIM"; }
+    LLMCore::TemplateType type() const override { return LLMCore::TemplateType::FIM; }
+    QStringList stopWords() const override { return QStringList() << "<|endoftext|>" << "<|EOT|>"; }
+    void prepareRequest(QJsonObject &request, const LLMCore::ContextData &context) const override
+    {
+        request["prompt"] = QString("<|fim_prefix|>%1<|fim_suffix|>%2<|fim_middle|>")
+                                .arg(context.prefix.value_or(""), context.suffix.value_or(""));
+        request["system"] = context.systemPrompt.value_or("");
+    }
+    QString description() const override
+    {
+        return "Template for Qwen models with FIM support:\n\n"
+               "{\n"
+               "  \"prompt\": \"<|fim_prefix|><code prefix><|fim_suffix|><code "
+               "suffix><|fim_middle|>\",\n"
+               "  \"system\": \"<system prompt>\"\n"
+               "}\n\n"
+               "Ideal for code completion with Qwen models.";
+    }
+    bool isSupportProvider(LLMCore::ProviderID id) const override
+    {
+        switch (id) {
+        case QodeAssist::LLMCore::ProviderID::Ollama:
+            return true;
+        default:
+            return false;
+        }
+    }
+};
+
+} // namespace QodeAssist::Templates