implement hessian response

[edgarriba]

Part of #190

This pull request introduces a new feature detection module to the kornia-imgproc crate, including the implementation of a Hessian response function and an example application demonstrating its use. The most important changes are summarized below:

Feature Detection Module

• Added a new features module in crates/kornia-imgproc/src/lib.rs to include feature detection functionalities.
• Implemented the hessian_response function in crates/kornia-imgproc/src/features.rs to compute the Hessian response of an image. This function includes validation, parallel processing, and a test case to ensure correctness.

Example Application

• Created a new example application in examples/features to demonstrate the use of the Hessian response function. This includes the Cargo.toml file, a README with usage instructions, and the main application code. [1] [2] [3]