Add AbpUnitTestSqliteConnection for unit test.

[maliming]

Resolve #19065

private static SqliteConnection CreateDatabaseAndGetConnection()
{
    var connection = new AbpUnitTestSqliteConnection("Data Source=:memory:");
    connection.Open();

    var options = new DbContextOptionsBuilder<MyProjectNameDbContext>()
        .UseSqlite(connection)
        .Options;

    using (var context = new MyProjectNameDbContext(options))
    {
        context.GetService<IRelationalDatabaseCreator>().CreateTables();
    }

    return connection;
}

[codecov]

Codecov Report

Attention: Patch coverage is 97.22222% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 51.62%. Comparing base (ce1235a) to head (c4cf58f).
Report is 43 commits behind head on dev.

Files	Patch %	Lines
...lobStoringDatabaseEntityFrameworkCoreTestModule.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #19125      +/-   ##
==========================================
+ Coverage   51.61%   51.62%   +0.01%     
==========================================
  Files        3095     3096       +1     
  Lines       98240    98265      +25     
  Branches     7853     7851       -2     
==========================================
+ Hits        50703    50731      +28     
  Misses      45976    45976              
+ Partials     1561     1558       -3     

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