#178 - Add support for running local LLMs via LLaMA C/C++ port (#249)

* Initial implementation of integrating llama.cpp to run LLaMA models locally

* Move submodule

* Copy llama submodule to bundle

* Support for downloading models from IDE

* Code cleanup

* Store port field

* Replace service selection radio group with dropdown

* Add quantization support + other fixes

* Add option to override host

* Fix override host handler

* Disable port field when override host enabled

* Design updates

* Fix llama settings configuration, design changes, clean up code

* Improve You.com coupon design

* Add new Phind model and help tooltip

* Fetch you.com subscription

* Add CodeBooga model, fix downloadable model selection

* Chat history support

* Code refactoring, minor bug fixes

* UI updates, several bug fixes, removed code llama python model

* Code cleanup, enable llama port only on macOS

* Change downloaded gguf models path

* Move some of the labels to codegpt bundle

* Minor fixes

* Remove ToRA model, add help texts

* Fix test

* Modify description

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "llama.cpp"]
+	path = src/main/cpp/llama.cpp
+	url = https://github.com/ggerganov/llama.cpp