Add mockito and core project in Gradle files #3652

Job	Run time
Gradle check	6m 56s
Cassandra 3.0 integration test	8m 42s
Cassandra 3.11 integration test	8m 48s
Lint dockerfiles	31s
DynamoDB integration test	14m 58s
Cosmos DB integration test	19m 57s
MariaDB 10 integration test	3m 44s
MySQL 5.7 integration test	4m 9s
MySQL 8.0 integration test	4m 56s
MySQL 8.1 integration test	5m 57s
Oracle 18 integration test	7m 39s
Oracle 21 integration test	9m 59s
Oracle 23 integration test	11m 35s
PostgreSQL 12 integration test	2m 31s
PostgreSQL 13 integration test	2m 34s
PostgreSQL 14 integration test	2m 48s
PostgreSQL 15 integration test	2m 51s
SQLite 3 integration test	4m 33s
SQL Server 2017 integration test	4m 54s
SQL Server 2019 integration test	4m 56s
SQL Server 2022 integration test	5m 22s
YugabyteDB 2 integration test	23m 43s
Multi-storage integration test	6m 46s
ScalarDB Server integration test	6m 11s
	2h 55m 0s

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