* - Added `NativeLogConfig` which allows overriding the llama.cpp log callback
 - Delaying binding of this into llama.cpp until after `NativeLibraryConfig` has loaded

* Using the log callback to show loading log messages during loading.

* Registering log callbacks before any calls to llama.cpp except `llama_empty_call`, this is specifically selected to be a method that does nothing and is just there for triggering DLL loading.

* - Removed much of the complexity of logging from `NativeApi.Load`. It always call whatever log callbacks you have registered.
 - Removed alternative path for `ILogger` in NativeLibraryConfig, instead it redirects to wrapping it in a delegate.

* Saving a GC handle to keep the log callback alive

* Removed prefix, logger should already do that.

* Buffering up messages until a newline is encountered before passing log message to ILogger.

* - Added trailing `\n` to log messages from loading.
 - Using `ThreadLocal<StringBuilder>` to ensure messages from separate threads don't get mixed together.

- Modified library loading to be based on `SetDllImportResolver`. This replaces the built in loading system and ensures there can't be two libraries loaded at once.
 - llava and llama are loaded separately, as needed.
 - All the previous loading logic is still used, within the `SetDllImportResolver`
 - Split out CUDA, AVX and MacOS paths to separate helper methods.
 - `Description` now specifies if it is for `llama` or `llava`

- UserSettings, simplifying the validation/re-ask loop down to one call
 - Program, adding colour to figlet title
 - Batched examples, showing default prompt
 - ExampleRunner, resetting state after running an example

Adds a NativeLibraryConfig.WithLogs() overload to let the user indicate the log level (with "info" as the default)

* LLama.Examples: RepoUtils.cs → ConsoleLogger.cs

* LLama.Examples: Examples/Runner.cs → ExampleRunner.cs

* LLama.Examples: delete unused console logger

* LLama.Examples: improve splash screen appearance

the llama_empty_call() no longer shows configuration information on startup, but it will display it automatically the first time a model is engaged

* LLama.Examples: Runner → ExampleRunner

* LLama.Examples: improve model path prompt

The last used model is stored in a config file and is re-used when a blank path is provided

* LLama.Examples: NativeApi.llama_empty_call() at startup

* LLama.Examples: reduce console noise when saving model path

- Renamed files and updated namespaces in Examples folder.
- Moved files from NewVersion folder to Examples folder.
- Removed TestRunner.cs file.
- Updated Runner.cs to include new examples.
- Update Program.cs to use the new Runner class instead of NewVersionTestRunner
- Update LLama.Examples namespace in Program.cs
- Update await NewVersionTestRunner.Run() in Program.cs to await Runner.Run()

- using `Lazy<T>` to initialize it automatically.
 - Added in `AVX512` support for all dotnet versions (but not autodetected).
 - Added in AVX version auto detection.

- Deleted `NativeInfo` (internal class, not used anywhere)