feat: implementing experience page (#718)

* feat: add color scheme toggle
* feat: colorScheme stored in UserSettings model
* feat: add stories
* fix: AnimatePresence exit not working

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Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

front/src/modules/ui/title/components/MainSectionTitle.tsx

@@ -6,7 +6,7 @@ type OwnProps = {
 };
 
 const StyledMainSectionTitle = styled.h2`
-  color: ${({ theme }) => theme.font.color.primary};
+  color: ${({ theme }) => theme.font.color.tertiary};
   font-size: ${({ theme }) => theme.font.size.xl};
   font-weight: ${({ theme }) => theme.font.weight.semiBold};
   line-height: ${({ theme }) => theme.text.lineHeight.lg};