Improve `<BiometricManager>` component

[deptyped]

• Slots API

<script lang="ts" setup>
import { BiometricManager } from 'vue-tg'
</script>

<template>
  <BiometricManager>
    <!-- isBiometricInited: false -->
    <template #loading>
      <p>Biometric init...</p>
    </template>

    <!-- isBiometricInited: true, isBiometricAvailable: false -->
    <template #not-supported>
      <p>Biometric is not supported on the current device</p>
    </template>

    <!-- isBiometricInited: true, isBiometricAccessGranted: false -->
    <template #not-granted>
      <p>Biometric access is not granted</p>
    </template>

    <p>Biometric is ready to use</p>
  </BiometricManager>
</template>