Add additional common queries

Author: antweb

libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/QueuedCall.sq

@@ -7,6 +7,10 @@ SELECT *
 FROM QueuedCall
 WHERE id = ?;
 
+count:
+SELECT COUNT(*)
+FROM QueuedCall;
+
 delete:
 DELETE FROM QueuedCall
 WHERE id = ?;

libpretixsync/src/main/sqldelight/common/eu/pretix/libpretixsync/sqldelight/TaxRule.sq

@@ -8,6 +8,11 @@ SELECT *
 FROM TaxRule
 WHERE server_id = ?;
 
+selectByEventSlug:
+SELECT *
+FROM TaxRule
+WHERE event_slug = ?;
+
 selectByServerIdListAndEventSlug:
 SELECT *
 FROM TaxRule