feat(date): add new composable

[johnleider]

Motivation and Context

New composable to share common date functionality

Markup:

<template>
  <v-app>
    <div class="ma-4 pa-4">
      <div v-for="(week, i) in weeks" :key="i" class="d-flex border-t border-s">
        <v-sheet
          v-for="(day, j) in week"
          :key="j"
          height="128"
          :color="!day ? 'grey-lighten-4' : 'surface'"
          :class="[
            'border-e text-center',
            i === 4 ? 'border-b' : '',
          ]"
          style="flex: 1 1 100%"
        >
          {{ day?.getDate() }}
        </v-sheet>
      </div>
    </div>
  </v-app>
</template>

<script setup>
  import { computed } from 'vue'
  import { useDate } from '../src/composables/date'

  const date = useDate({
    displayDate: new Date(),
  })

  const weeks = computed(() => {
    return date.weeksInMonth.value
  })
</script>

[nekosaur]

yep something like this is what I had planned. the built in adapter is not very locale friendly but that can be a later problem

[lorand-horvath]

Good idea!