Helper functions will ensure URL parameters are
normalized before being used.

I have added a test file for the URL parameter parsing utility located at client/utils/parseURLParams.js. This test file includes various test cases to ensure the correct functionality of the parseURLParams function, covering edge cases and typical usage scenarios. For the add-on flags I allowed 'on', 'true', '1', 'ON', 'True', and 'TRUE' to be interpreted as true, while 'off', 'false', '0', 'OFF', 'False', and 'FALSE' are interpreted as false. This should enhance the robustness of the URL parameter parsing in our application.

Convert defaultHTML from a constant string to a function that accepts
an options object for version and add-on library configuration. This
enables URL parameter parsing for library selection.
Maintains backward compatibility - calling defaultHTML() with no
arguments produces the same output as before.

Add validation functions to ensure URL parameters for p5.js versioning
is correctly parsed and handled. Falls back to default functionality
for invalid/missing parameters.
Use npx prettier --write to format all modified files.
Change test fallbacks to be consistent with default behavior.
Add URL parser to client/modules/IDE/reducers/file.js
Co-authored-by: Oscar Bedolla <GoodKimchi@users.noreply.github.com>
Co-authored-by: Enoch Owoade <enochowoade@gmail.com>