EIP1-11111: add register check database objects to ems schema

[SimPaySW]

Description of changes

As part of merging the Register Checker API and EMS Integration API into a single EMS Integration API the register_checker db schema objects need to be added to the ems_integration_application schema. This changeset has added new db changelog files in eip-ero-ems-integration-api repository that include the register_checker db objects.

JIRA item

https://mhclgdigital.atlassian.net/browse/EIP1-11111

Steps that were followed to verify the migration

1. Start the docker database container and, on a clean schema, run an update migration of these changes to produce a "merged" ems_integration_application-plus-register_checker schema.

liquibase update --username=**** --password=***** --url=jdbc:mysql://localhost:3306/ems_integration_application --changelog-file=src/main/resources/db/changelog/db.changelog-master.yaml 

2. With reference to the old register_checker db schema,, generate a diff-changelog of the differences to the new ems_integration_application-plus-register_checker schema. This should show the addition of ems_integration objects.

liquibase diff-changelog --changelog-file=changelog-rc-as-ref-schema-11111.xml  \\n--url="jdbc:mysql://127.0.0.1:13306/register_checker" \\n--username=root \\n--password=rootPassword \\n--reference-url="jdbc:mysql://localhost:3306/ems_integration_application" \\n--reference-username=**** \\n--reference-password=*****

3. On a clean ems_integration_application schema, run an update migration of the main branch changelogs on the schema to populate it with the old set of objects.

liquibase update --username=root --password=rootPassword --url=jdbc:mysql://localhost:3306/ems_integration_application --changelog-file=src/main/resources/db/changelog/db.changelog-master.yaml 

4. With reference to the old register_checker db schema,, generate a diff-changelog of the differences to the old ems_integration_application schema. This should show no common objects except an address table.

liquibase diff-changelog --changelog-file=changelog-rc-as-ref-schema-main.xml  \\n--url="jdbc:mysql://127.0.0.1:13306/register_checker" \\n--username=**** \\n--password=***** \\n--reference-url="jdbc:mysql://localhost:3306/ems_integration_application" \\n--reference-username=**** \\n--reference-password=*****

5. Diff the changelogs generated at step 3 with those generated at step 5. Note that the difference between these files is the dropped tables and indexes for the merged register_checker schema. Files are attached as evidence.
   changelog-rc-as-ref-schema-11111.xml.txt
   changelog-rc-as-ref-schema-main.xml.txt

[TomHanmer29]

LGTM pending tech signoff

[SimPaySW]

LGTM pending tech signoff

Thanks @TomHanmer29 NB I discovered a few more schema changes to support the merge of the APIs and have pushed a second commit to this branch. I've added Stephen and Andy as reviewers mainly for their visibility of this.