Introduce support to Theme Access app in the new shopify theme push implementation

[karreiro]

WHY are these changes introduced?

We've introduced support for the CLI in the Theme Access app supports the CLI, so we may rollback this change.

WHAT is this pull request doing?

This PR updates the push command to no longer rely in the legacy implementation when the --password flag is passed

How to test your changes?

Post-release steps

None.

Measuring impact

How do we know this change was effective? Please choose one:

• n/a - this doesn't need measurement, e.g. a linting rule or a bug-fix
• Existing analytics will cater for this addition
• PR includes analytics changes to measure impact

Checklist

• I've considered possible cross-platform impacts (Mac, Linux, Windows)
• I've considered possible documentation changes
• I've made sure that any changes to dev or deploy have been reflected in the internal flowchart.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	72.14% (+0.01% 🔼)	6829/9466
🟡	Branches	69.2% (+0.02% 🔼)	3341/4828
🟡	Functions	70.96%	1823/2569
🟡	Lines	73.29% (+0.01% 🔼)	6439/8786

Test suite run success

1626 tests passing in 755 suites.

Report generated by 🧪jest coverage report action from e32854a

[jamesmengo]

🥳 🚢 Huge for the program!!