Refactor and Optimize Codebase for latest ComfyUI

[toxicwind]

This pull request aims to enhance the codebase by improving code organization, readability, and maintainability. The changes made are as follows:

1. Code Organization and Style:

   • Sorted imported modules alphabetically.
   • Added type hints for function parameters and return values.
   • Removed unnecessary imports for code cleanliness.
   • Formatted the code according to PEP 8 style guidelines.

2. Refactored Functions:

   • Refactored functions like adjust_tensor_shape, expand, and bounded_modulo for improved efficiency and readability.

3. calc_cond Function:

   • Simplified and improved readability using dictionary comprehension.
   • Enhanced the code for determining 'orig_len' and selecting conditions.

4. catenate_conds and subscript_cond Functions:

   • Simplified and made more concise for better readability.

5. pad_cond Function:

   • Modified to use F.pad for efficient tensor padding.

6. CFGDenoiser Class:

   • Introduced methods like prepare_inputs, prepare_cond, apply_model, and post_process for modularity and readability.
   • Eliminated redundant code segments for conciseness and clarity.

7. CFGNoisePredictor Class:

   • Refactored the apply_model method for readability and modularity.
   • Introduced helper methods for efficient condition preparation.
   • Made the txt2img_image_conditioning method static for better organization.

8. SDKSampler Class:

   • Introduced the set_model_wrap method to set the model_wrap attribute for improved organization.
   • Modified the constructor to use the set_model_wrap method.

These changes aim to improve code quality and make it more readable and maintainable while preserving the original functionality of the code. The code remains functionally intact, but the enhancements result in a cleaner, more organized, and better-documented codebase.