feat: add tooltips to add & remove buttons

pages/[[server]]/list/[list]/index/accounts.vue

@@ -127,6 +127,7 @@ function removeAccount(account: mastodon.v1.Account) {
                 :result="result"
                 :tabindex="focused ? 0 : -1"
               />
+              <CommonTooltip :content="isInCurrentList(result.id) ? $t('list.remove_account') : $t('list.add_account')">
                 <button
                   text-sm p2 border-1 transition-colors
                   border-dark
@@ -137,6 +138,7 @@ function removeAccount(account: mastodon.v1.Account) {
                 >
                   <span :class="isInCurrentList(result.id) ? 'i-ri:user-unfollow-line' : 'i-ri:user-add-line'" />
                 </button>
+              </CommonTooltip>
             </div>
           </template>
           <span v-else block text-center text-sm text-secondary>