Add copy-button and JavaScript to copy text to user clipboard

[DJStowe]

Fixes

Fixes #10 by @SAMAD101

Description

Added copy-button to showliberate.html
Added inline JavaScript to copy text in showliberate.html
added formatting for copy-button into base.html
Deleted some whitespace that was making the pre-commit hooks mad in showliberate.html and base.html

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

[SAMAD101]

Can you please put a small video showing it in action @DJStowe

[DJStowe]

Video Here:
https://www.dropbox.com/scl/fo/vgwhcmoootqijsci3rm9n/h?rlkey=y0x62z84cnqn8uv02s0ie7gp6&dl=0

[SAMAD101]

Video Here: https://www.dropbox.com/scl/fo/vgwhcmoootqijsci3rm9n/h?rlkey=y0x62z84cnqn8uv02s0ie7gp6&dl=0

thank you for contributing