Bug 1593041 - Add com.apple.security.smartcard entitlement to Firefox r=spohl

Add the com.apple.security.smartcard entitlement to Firefox's entitlements list.

Needed for clients of some CryptoTokenKit.framework API's, per SmartCardServices(7).

Differential Revision: https://phabricator.services.mozilla.com/D51303

--HG--
extra : moz-landing-system : lando

security/mac/hardenedruntime/developer.entitlements.xml

@@ -46,5 +46,8 @@
          for native messaging webextension helper applications launched by
          Firefox which rely on Apple Events to signal other processes. -->
     <key>com.apple.security.automation.apple-events</key><true/>
+
+    <!-- For SmartCardServices(7) -->
+    <key>com.apple.security.smartcard</key><true/>
   </dict>
 </plist>

security/mac/hardenedruntime/production.entitlements.xml

@@ -46,5 +46,8 @@
          for native messaging webextension helper applications launched by
          Firefox which rely on Apple Events to signal other processes. -->
     <key>com.apple.security.automation.apple-events</key><true/>
+
+    <!-- For SmartCardServices(7) -->
+    <key>com.apple.security.smartcard</key><true/>
   </dict>
 </plist>