Custom Sampling Pipelines

- Added BaseSamplingPipeline which provides a base impl of `ISamplingPipeline`
 - Added `DefaultSamplingPipeline` which mimics normal llama.cpp sampling

- Added an example usage to one of the tests

- Added a `Sample` method to `LLamaContext` which uses a custom pipeline
 - Modified all executors to use the custom pipeline if it exists

- Saves with serialized ChatHistory of session
- Only allows use of ChatHistory.Message (instead of raw text)
   for easy post-processing with IHistoryTransform implementation
- Provides History Management methods
- Allows user to regenerate last assistant message

feat: allow customized search path for native library loading.

November Binary Update

Bumps [Microsoft.Extensions.Logging.Abstractions](https://github.com/dotnet/runtime) from 7.0.1 to 8.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/compare/v7.0.1...v8.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Logging.Abstractions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Bumps [System.Text.Json](https://github.com/dotnet/runtime) from 7.0.3 to 8.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/compare/v7.0.3...v8.0.0)

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

- Built by this run: https://github.com/SciSharp/LLamaSharp/actions/runs/6921572568
 - commit: `e937066420b79a757bf80e9836eb12b88420a218`
 - Rearranged paths

Better TensorSplitsCollection Initialisation

Removed Obsolete ModelParams Constructor

FixedSizeQueue:
 - Enqueue would always stop one short of filling the capacity
 - Fill would only _replace_ existing items. It was only used in a place where there were not existing items! Removed the method entirely.

LLamaGrammarElement:
 - Converted into a `record` struct, removed all of the (now unnecessary) equality stuff.

Added Obsolete markings to all `Eval` overloads

dotnet8.0

StreamingTextDecoder in LLamaExecutorBase

Originally from these PRs:
 - https://github.com/SciSharp/LLamaSharp/pull/263
 - https://github.com/SciSharp/LLamaSharp/pull/259

CPU Feature Detection 2

MinP Sampler

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

- Cleaned up comments in implementations of `IInferenceParams`
 - Removed default values for all parameters in `LLamaContext.Sample` - they're never used and probably _shouldn't_ ever be used