feat: refactor cli parsing

[Shubhranshu153]

Issue #, if available:

Description of changes:
For macos and windows and OS specific command prefix is attached to execute in the vm plane. As there is a vm plane, environment variables and credentials needs to be passed from the host to the vm. The limactl plane doesnt automatically handle this [Issue: https://github.com/lima-vm/lima/issues/1419]. To address this, the current finch handler used to parse or env flags [‘-e’,‘—env’,‘—env-file’], consolidated it and added it. For windows, the host path need to be translated to equivalent mount paths in the wsl environment.

In the proposed design, For macOS and windows we parse all env flags and add those env variables in the prefix of the limactl command. Here we dont modify the ordering or the contents of the command args reducing the complexity and chances of error getting introduced.

For windows path we do an inplace substitution based on regex pattern search across the args. This involves modifying the command args as windows to wsl path translation support for limactl shell execution is not provided. We use regexp to do a pattern match in substring of args split by separators. To validate this, we would rely on unit test and e2e tests.

Testing done:

1. Automated Tests

TODO:
Devcontainers qualification tests.

• I've reviewed the guidance in CONTRIBUTING.md

License Acceptance

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[pendo324]

nit: can we move these create* functions to their own file or package?

[pendo324]

All of these functions are only called once each. Are they here just for easier unit testing?