CI: Move docker files and remove deprecated ci scripts

[maxknv]

Changelog category (leave one):

• Not for changelog (changelog entry is not required)

• moves all docker test images into ./ci/docker
  NOTE: Docker files are still a topic for refactoring - test-util and test-base should be merged into one image, many job can reuse the same image, like performance, stress, upgrade, fuzzer; docker images must not include scripts, ch configs, etc. - It is to be addressed in follow up PRs

• removes files from legacy ci ./tests/ci that no longer used

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

...

Documentation entry for user-facing changes

• Documentation is written (mandatory for new features)

[clickhouse-gh]

Workflow [PR], commit [3b843c7]

Summary: ❌

job_name	test_name	status	info	comment
Stress test (amd_msan)		failure
	Server died	FAIL
	Hung check failed, possible deadlock found (see hung_check.log)	FAIL
	Cannot start clickhouse-server	FAIL
	Server failed to start (see application_errors.txt and clickhouse-server.clean.log)	FAIL
	Killed by signal (in clickhouse-server.log)	FAIL
	Fatal message in clickhouse-server.log (see fatal_messages.txt)	FAIL
	Killed by signal (output files)	FAIL
	Found signal in gdb.log	FAIL