Handle conditional creates across partitions with duplicate search URLs by updating ResourceSearchUrlEntity

[lukedegruchy]

• Add new configuration to allow resources with duplicate identifiers across partitions
• Replace the existing single field primary key on ResourceSearchUrlEntity/HFJ_RES_SEARCH_URL with on that includes search_url and partition ID (in that order)
• Add a new migration task to add new primary keys
• Add a new migration task to drop primary keys, which requires database-specific SQL to introspect schemas to find the primary key name so the ALTER TABLE knows which constraint to drop
• Add new elaborate migration to add partition_id as a nullable column, defaulting to -1, UPDATE all existing rows to -1, make the column non-null, drop the existing primary key and add the new primary key
• New migration verification in HapiSchemaMigrationTest
• New test for conditional creates with partitions in FhirResourceDaoR4ConcurrentCreateTest

Closes https://github.com/hapifhir/hapi-fhir/issues/6033

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 83.51%. Comparing base (497b9f2) to head (6fa4739). Report is 110 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #5983 +/- ## ============================================ + Coverage 83.39% 83.51% +0.11% - Complexity 26927 27347 +420 ============================================ Files 1681 1702 +21 Lines 103965 105890 +1925 Branches 13189 13364 +175 ============================================ + Hits 86702 88430 +1728 - Misses 11613 11747 +134 - Partials 5650 5713 +63 ```

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