Prepare Fastmail OAuth

app/src/main/res/xml/providers.xml

@@ -446,7 +446,8 @@
         appPassword="true"
         documentation="You might need an app password; You can\'t use third party email apps with the basic plan, please <a href="https://www.fastmail.help/hc/en-us/articles/360058752854-App-passwords">see here</a>."
         domain="fastmail\\..*"
-        link="https://www.fastmail.com/help/technical/servernamesandports.html">
+        link="https://www.fastmail.com/help/technical/servernamesandports.html"
+        order="9">
         <imap
             host="imap.fastmail.com"
             port="993"
@@ -456,6 +457,17 @@
             port="465"
             starttls="false" />
         <!-- https://twitter.com/fastmail/status/569046903855271937 -->
+        <oauth
+            askAccount="true"
+            authorizationEndpoint="https://api.fastmail.com/oauth/authorize"
+            clientId=""
+            enabled="false"
+            privacy="https://www.fastmail.com/features/privacy/"
+            redirectUri=""
+            scopes="urn:ietf:params:jmap:core,urn:ietf:params:jmap:mail,urn:ietf:params:jmap:submission"
+            tokenEndpoint="https://api.fastmail.com/oauth/refresh">
+            <!-- https://www.fastmail.com/dev/#o-auth-at-fastmail -->
+        </oauth>
     </provider>
     <!-- no IMAP IDLE -->
     <provider