[New Addon/Workbench] ColorPalette Themes

[altangarts]

Repo: https://github.com/Altan-g/FreeCAD-ColorPalette-Theme

Dependencies

• This Addon/workbench runs on:
  • Most up to date stable release
  • Most up to date development release
  • Python 3 compatible
  • Qt5 compatible
  • Qt5 and Qt6 compatible (uses "import PySide" rather than "import PySide2")
• Is this backward compatible with any previous version of FC? If so, please mention in the README.md
• Does this use 3rd party dependencies?
  • numpy
  • scipy
  • Please specify if there are any other dependencies below and in the README.md and package.xml files

README.md

• Is Markdown friendly
• Has a Prerequisite or Dependencies section
• Links to a LICENCE file (Note: FreeCAD uses LGPL2.1, most people choose that or GPL3)
• Has a Screenshot and/or a section for screenshots
• Links to a FreeCAD Forum discussion thread

Misc.

• Do you keep a changelog?
  If so, where?
• Your Addon has an SVG based Logo? No, it's PNG
• Your Addon has a package.xml file?
• Edit the FreeCAD External Workbenches wiki page

Housekeeping

• Fixed typos in the code using codespell. We recommend running: codespell -q 3
• We recommend linting python code with PEP8. See [coding conventions][Code-conventions]

Github Related

• Does your repository use Release tags ?
• Repository has topics which include FreeCAD Workbench Addon

Note: if your addon/workbench code doesn't reside on Github, please state the address where it is mentioned