Feature: Add Experience/Preference Customization Options

[babblebey]

Implement a customization menu option where users can adjust their experience preferences, such as font size and theme (dark or light mode). This feature will enhance user experience and allow for a more personalized browsing experience, hence making our platform super accessible.

Tasks:

• Create a customization menu UI with options for font size adjustment and theme selection.
• Implement font-size customization by setting a percentage value for font-size to the html tag on the client-side.
• Implement a theme switcher toggle for users to choose between dark and light modes (this assumes that we have already completed #14 😉)
• Save user preferences to local storage or cookies to persist settings across page reloads.

Additional Information:

• The customization menu should be easily accessible and intuitive for users to use.
• I got more stuff, but I can't seem to remember right now (I'll update issue description as it come)... Just share your thought if you've got any 😉