Resolve "Refacto des dossiers de composants"

Closes #363 (closed)

src/lib/components/transverse_pages/TextUnderconstructionMessage.svelte

-<script lang="ts">
-</script>
-
-<p class="flex rounded bg-amber-500 p-3 text-sm leading-normal text-white">
-  🚧 &nbsp; Cette partie est en construction.
-</p>