Implement begining of migration

Move Function/Query definition

src/test/resources/sql/migration_without_down/1.up.sql

@@ -0,0 +1 @@
+SELECT 1;

src/test/resources/sql/migrations/1.down.sql

@@ -0,0 +1 @@
+SELECT 1;

src/test/resources/sql/migrations/1.up.sql

@@ -0,0 +1 @@
+SELECT 1;

src/test/resources/sql/real_migrations/1.down.sql

@@ -0,0 +1 @@
+DROP TABLE migration1;

src/test/resources/sql/real_migrations/1.up.sql

@@ -0,0 +1,3 @@
+CREATE TABLE migration1 (
+    id INT
+);