Add migration-5-to-7 module: Hibernate 5.6.15 vs 7.4.14 jar diff, compile checks, schema defaults and cheat-sheet snippets

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01YPgGH6aMbSLANL3E2HHmS6

migration-5-to-7/output/06-schema-7.4.14.txt

@@ -0,0 +1,15 @@
+Hibernate 7.4.14, H2, @GeneratedValue with no strategy
+-- sequences (name, increment)
+PROBE_SEQ 50
+-- columns of PROBE (name, type)
+ACTIVE BOOLEAN
+BYNAME ENUM
+BYORDINAL TINYINT
+CREATEDAT TIMESTAMP WITH TIME ZONE
+ID BIGINT
+NAME CHARACTER VARYING
+OCCURREDAT TIMESTAMP
+PAYLOAD BINARY VARYING
+PRICE NUMERIC
+SPAN NUMERIC
+UUID UUID