Added Color palette Generator

[ExPl0iT-29]

Pull Request

Color Palette Generator -

Brief about script

• The app.py script creates a Flask web server that serves an HTML page (index.html) where users can generate color palettes.
• The generate_color_palette() function in app.py generates a list of random hexadecimal colors using the random module.
• The front-end (index.html) uses a form to capture the user's input for the number of colors, and the results are displayed using a simple CSS grid for visualization.
• Each color is displayed as a square with its corresponding hex code.

Issue no. - #887

Checks

• This issue was assigned to me.
• One Change in one Pull Request
• My file is in proper folder (Name of folder should be in lowercase with no space in between) (E.g. meet_schedular)
• I am following clean code and Documentation and my code is well linted with flake8.
• I have added README.md and requirements.txt (Include version numbers too e.g. pandas==0.0.1) with my script
• I have used REPO README TEAMPLATE (Necessary)
• Just including required dependencies in requirements.txt (Don't include Python version too)

Issue was assigned to me by @pawangeek