Configuration can be loaded or passed; Added gpu_id parameter

[AiVerisimilitude]

Description

This update introduces enhanced configuration flexibility: configurations can now be specified either as a string pointing to an INI file or as a struct containing the configuration parameters.

Motivation

1. Dynamic Configuration Updates: Parameters can now be modified at runtime based on dynamic information (e.g., assigned GPU).
2. Seamless Integration: The use of structs allows for easier integration with the user’s application-specific parameter management components.

Summary of Changes

1. Configuration Flexibility:
   • A configuration can now be:
     • A string: Path to an INI configuration file.
     • A struct: Directly containing configuration parameters.
   • For GMC configurations, the struct-based approach applies one level deeper, allowing configurations to represent various classes (e.g., ORB, ECC).
   • Structs now hold the default values of the parameters
   • Backward Compatibility: No changes are required for users interacting via the BotSORT class. However, users directly accessing specific components of the library will need to use parameter structs, as BotSORT now handles loading parameters into structs.
2. New INI function set

• A new set of Load functions as been added that takes the variable in which to store the value in but leaves the value unchanged if it is not present in the INI file. This is important since the default values are in the structs, not in the loading from the file
• Added [[nodiscard]] to the Get function set so that warnings will be thrown if a value was discarded. This is to help mitigate issues with the usage of Get when it should have been Load,

3. New ReID Parameter:

   • A gpu_id parameter has been added to specify which GPU a model should use in multi-GPU environments.
   • This change also affects the naming convention of the generated engine file, which now includes the target GPU name.
   • Backward Compatibility: Due to the name changes, engine files will either need to be re-generated or manually renamed

4. Track ID Retrieval:

   • A minor addition enables the retrieval of a track's ID.