add missing schema files

schema/versions/mysql/49.sql

@@ -0,0 +1,5 @@
+alter table ttrss_counters_cache add column updated datetime;
+update ttrss_counters_cache set updated = NOW();
+alter table ttrss_counters_cache change updated updated datetime not null;
+
+update ttrss_version set schema_version = 49;

schema/versions/pgsql/49.sql

@@ -0,0 +1,9 @@
+begin;
+
+alter table ttrss_counters_cache add column updated timestamp;
+update ttrss_counters_cache set updated = NOW();
+alter table ttrss_counters_cache alter column updated set not null;
+
+update ttrss_version set schema_version = 49;
+
+commit;