Source File-Secure: source-file-secure should depend on source-file python package instead of source-file docker image

[alafanechere]

source-file-secure is a variant of source-file that enforces SSL.

source-file-secure currently overrides source-file by installing source-file via the use of the FROM airbyte/source-file:0.3.9 instruction in its Dockerfile.

It leads to the following clumsy imports to make sure the python execution can work inside a docker container or inside a classic python virtual env:

try:
    import source_file.source
except ModuleNotFoundError:
    current_dir = os.path.dirname(os.path.abspath(__file__))
    parent_source_local = os.path.join(current_dir, "../../source-file")
    if os.path.isdir(parent_source_local):
        sys.path.append(parent_source_local)
    else:
        raise RuntimeError("not found parent source folder")
    import source_file.source

I believe we should rather install source-file in source-file-secure via local pip dependencies declared in setup.py like here.

It will simplify the dependency expression outside of the Docker context and allow us to build this connector with a standard dockerfile / dagger pipeline.

This will become more pressing when we'd want to get rid of Python connector's dockerfile and replace them by Dagger build pipeline with airbyte-ci.

[alafanechere]

Done in #27107