UI/UI improvments, code optimisation

[mouafus]

• I think it is important to optimize the code and thus lighten the bundle,
• for the design for example, we use MUI and Tailwindcss, these two elements do not have to be in the same reactjs project.
• the assets can also be optimized, we could use svg instead of png to make the thing less heavy.
• in the code also, the routing is not the most optimal (we could add a loading screen for the pages which take time to display)
• files are created to add two or three lines of code then, we can optimize with a single file or we export these small pieces of code
• UI/UX level, it's true that we are inspired by another site, but we can do so much better in my opinion, especially the form of adding an alert can be done in a modal box to avoid the user to leave the page, the drawer could be transformed to display the details of a point on the map ...