Release for Windows, macOS and Linux

Changelog:

• Added options to select webcam resolution and FPS.

Windows:

1. Download and extract "windows.zip".
2. Run executable named "gui.exe" to open the GUI.
3. Follow the instructions on README.md

macOS:

1. Download the source code.
2. Download and install latest version of Python.
3. Download and install required libraries.
4. Run "gui.py" to open the GUI.
5. Follow the instructions on README.md

Linux:

1. Download the source code.
2. Download and install latest version of Python.
3. Download and install required libraries.
4. Run "gui.py" to open the GUI.
5. Check if there is any voice option displayed. Install text to speech library such as espeak if not.
6. Follow the instructions on README.md