spotbugs: ignore Room autogenerated classes

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

spotbugs-filter.xml

@@ -64,4 +64,13 @@
 
     <!-- This is unmanageable for now due to large amount of interconnected static state -->
     <Bug pattern="FCCD_FIND_CLASS_CIRCULAR_DEPENDENCY" />
+
+    <!--Autogenerated Room classes-->
+    <Match>
+        <Class name="~.*\.NextcloudDatabase_Impl.*" />
+    </Match>
+    <Match>
+        <Class name="~.*\..*Dao_Impl.*" />
+    </Match>
+
 </FindBugsFilter>