adding breadcrumbs to login page magento 2
<referenceBlock name="breadcrumbs">
<action method="addCrumb">
<argument name="crumbName" xsi:type="string">account</argument>
<argument name="crumbInfo" xsi:type="array">
<item name="title" xsi:type="string" translate="true">Account</item>
<item name="label" xsi:type="string" translate="true">Account</item>
<item name="link" xsi:type="string">/customer/account</item>
</argument>
</action>
<action method="addCrumb">
<argument name="crumbName" xsi:type="string">account.create</argument>
<argument name="crumbInfo" xsi:type="array">
<item name="title" xsi:type="string" translate="true">New Customer</item>
<item name="label" xsi:type="string" translate="true">New Customer</item>
<item name="last" xsi:type="boolean">true</item>
</argument>
</action>
</referenceBlock>