refactor: Restructure project into sources/tests layout and dissolve PluginLLMCore

sources/providers/ProviderID.hpp

@@ -0,0 +1,22 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+namespace QodeAssist::Providers {
+
+enum class ProviderID {
+    Any,
+    Ollama,
+    LMStudio,
+    Claude,
+    OpenAI,
+    OpenAICompatible,
+    OpenAIResponses,
+    MistralAI,
+    OpenRouter,
+    GoogleAI,
+    LlamaCpp,
+    Qwen,
+    DeepSeek
+};
+}