Changes since last release (v2023.02)

Vision library

Added six new functions:
- Bilateral filter
- Gamma Correction
- Histogram (single channel)
- Image enhancement (color and brightness adjustment)
- 2D Convolution
- ConverTo() function, similar to OpenCV's ConverTo function to multiply and adds some factors to each pixel of the image.
Updated Debayer example to use BGR pixel format instead of RGB to be consistent with OpenCV.
Gaussian Blur – Now it uses the 2D convolution function internally.
Added three more variations of the TransformPixel() function to process individual pixels.

Refactored RISC-V on-board tests to have common HLS .cpp source code shared between different implementations for IcicleKit, BeagleFire-V and Discovery Kit boards. The difference is the Libero project files for each board.
Updated readme files for all functions regarding resource usage with Libero 2024.2
Removed SmartHLS compilation patch from BeagleFire-V math sin_performance example

New library with an initial FFT function (in-place, radix-2, 256 point, 16-bit Real & Imaginary number input stream)

Set all example program arguments in the libraries makefiles to use SHLS_LIBRARY_DIR to make it easier to compile off-tree (e.g. when importing a project from Eclipe IDE) by updating a single variable.
Cleaned-up some makefiles removing deprecated variables
Added PolarFire SoC Discovery Kit and BeagleV-Fire boards reference design repos as submodules
Added scripts to compile within PowerShell in Windows
Added licenses
Added .gitignore