Improve fluency of persistent store configuration builders

ConfigurationBuilder builder = ...;

builder
    .persistence()
        .addStore(JdbcStringBasedStoreConfigurationBuilder.class)
            .dialect(...)
            .table() // <- compilation error
                ...
            .connectionPool() // <- compilation error
                ...;

ConfigurationBuilder builder = ...;

JdbcStringBasedStoreConfigurationBuilder store = builder
    .persistence()
        .addStore(JdbcStringBasedStoreConfigurationBuilder.class)
            .dialect(...);
store
            .table()
                ...;
store
            .connectionPool()
                ...;