Provide color values in multiple data formats

[arcticicestudio]

Currently the color values are only provided through the documentation in the README.md file that can not be simply parsed programmatically for automated usage in other projects.
This will be changed by adding the following data file formats that can be parsed:

• JSON - The file will provide an object that contains an colors collection/array that stores the individual colors as HEX values. They can be read and concatenated with a comma (,) to match Slack's shareable theme format.
• YAML - Like the JSON format, the YAML file will also provide the colors collection/array containing the color HEX values.
• Plain Text - The colors will be also provided as plain text through a .txt file.