[FEATURE]: Add support for installing DQX with company hosted PYPI mirror

[mwojtyczka]

Is there an existing issue for this?

• I have searched the existing issues

Problem statement

DQX can be installed as a library from private PYPI mirror but it's not documented. We need to add info that dependent libraries must be available from the mirror as well.

For DQX installation as a tool, the dependencies are currently not uploaded to the workspace alongside the dqx wheel automatically.

Proposed Solution

• Document required steps for using private PYPI for installing DQX
• Upload dependencies for workspace installation automatically

Follow the same process as in UCX:

• Upload dependencies to the workspace: https://github.com/databrickslabs/ucx/blob/d7a1c5558ae334e0771c67853cb1e057c4798491/src/databricks/labs/ucx/install.py#L254
• Update docs: https://github.com/databrickslabs/ucx/blob/d7a1c5558ae334e0771c67853cb1e057c4798491/docs/ucx/docs/installation/index.mdx#installing-ucx-with-company-hosted-pypi-mirror

Additional Context

No response