feat: Développer le composant Datepicker (#52)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Co-authored-by: matthieu <matthieu@yuno.malio.fr>
Co-authored-by: THOLOT DECHENE Matthieu <matthieu@yuno.malio.fr>
Reviewed-on: #52
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/date/internal/MonthPicker.vue

@@ -0,0 +1,36 @@
+<template>
+  <div
+    data-test="month-picker"
+    class="grid grid-cols-3 gap-3"
+  >
+    <button
+      v-for="(name, index) in months"
+      :key="name"
+      type="button"
+      data-test="month"
+      :data-month="index"
+      class="flex h-[45px] w-full items-center justify-center"
+      @click="emit('select', index)"
+    >
+      <span
+        class="flex h-[30px] w-full items-center justify-center rounded text-sm transition-colors duration-100"
+        :class="index === selectedMonth
+          ? 'bg-m-primary text-white'
+          : 'text-black hover:bg-m-primary/10'"
+      >
+        {{ name }}
+      </span>
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+defineOptions({name: 'MalioDateMonthPicker'})
+
+defineProps<{selectedMonth?: number}>()
+
+const emit = defineEmits<{(e: 'select', month: number): void}>()
+
+const months = ['Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin',
+  'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre']
+</script>