Implement Int128, UInt128, Int256 and UInt256 types

[akolov]

Added support for Int128, UInt128 and Int256, UInt256 types.

• fixes Add support for UInt128 (and others?) #176

[xzkostyan]

Good. But build has failed. Will you make tests green?

[xzkostyan]

For skipping test for old server add to testcases:

required_server_version = (X, Y, Z)

[akolov]

Thanks! Added server version to tests.

[akolov]

Something is wrong with Docker registry:

Pulling clickhouse-server (clickhouse/clickhouse-server:22.5.1.2079)...
[11](https://github.com/xzkostyan/clickhouse-sqlalchemy/runs/8073182468?check_suite_focus=true#step:7:12)
Head "https://registry-1.docker.io/v2/clickhouse/clickhouse-server/manifests/22.5.1.2079": Get "https://auth.docker.io/token?account=githubactions&scope=repository%3Aclickhouse%2Fclickhouse-server%3Apull&service=registry.docker.io": EOF
[12](https://github.com/xzkostyan/clickhouse-sqlalchemy/runs/8073182468?check_suite_focus=true#step:7:13)
Error: Process completed with exit code 1.

[coveralls]

Coverage increased (+0.1%) to 83.808% when pulling 91c830c on akolov:development-large-int-types into 7848994 on xzkostyan:master.