Refactor type casting in Cython files for improved clarity and consistency

- Updated various Cython files to explicitly cast types, enhancing type safety and readability.
- Adjusted the `engine_name` property in `InferenceEngine` and its subclasses to be set directly in the constructor.
- Modified the `request` method in `_SessionWithBase` to accept `*args` for better flexibility.
- Ensured proper type casting for return values in methods across multiple classes, including `Inference`, `CoreMLEngine`, and `TensorRTEngine`.

These changes aim to streamline the codebase and improve maintainability by enforcing consistent type usage.

setup.py

@@ -15,7 +15,7 @@ extensions = [
 ]
 
 try:
-    import tensorrt
+    import tensorrt  # pyright: ignore[reportMissingImports]
     extensions.append(
         Extension('engines.tensorrt_engine', ['engines/tensorrt_engine.pyx'], include_dirs=[np.get_include()])
     )