<!-- ⚠️⚠️ Do Not Delete These Comments. ⚠️⚠️ --> <!-- Read our Rules of Conduct: https://github.com/SVijayB/JavaSpace/blob/master/.github/CODE_OF_CONDUCT.md --> <!-- Please search existing issues to avoid creating duplicates. --> <!--- Provide a general summary of your issue in the Title above --> <!-- Describe the changes to the documentations you'd like. --> Graph colouring problem: 1. m-colouring decision problem 2. m-colouring permutation problem 3. m-colouring optimization problem <!-- Before submitting, click on the preview tab to check your work so far-->