Ajout des stats

src/lib/components/BudgetConnexionModal.svelte

src/lib/components/NavBar.svelte

...omponents/variables/VariableReferredScaleParameter.svelte

...omponents/variables/VariableReferredValueParameter.svelte

src/lib/matomo.ts

src/routes/+layout.svelte

src/routes/+page.svelte