Settings and setup link to the privacy policy

The usage notes card, which setup and Settings share, ends with it, and Settings' About links
list it under the source code.

gearslip/src/main/res/values/strings.xml

@@ -326,6 +326,8 @@
     <string name="about_matrix_sub">Talk with other drivers about cars, apps, and Gearslip</string>
     <string name="about_translate">Help translate Gearslip</string>
     <string name="about_translate_sub">Fix or add your language on Weblate. Some translations started as machine translations.</string>
+    <string name="privacy_policy">Privacy policy</string>
+    <string name="privacy_policy_sub">What Gearslip sends, to whom, and why</string>
     <string name="about_source">Source code</string>
     <string name="about_source_sub">Read or change Gearslip\'s code under the AGPL</string>
     <string name="about_voice_credits">Voice credits</string>