Feature/bcss 19935 refactor playwright project folder structure (#11)

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## Description

<!-- Describe your changes in detail. -->
Refactoring the Playwright project folder structure for the pages POMs

## Context

<!-- Why is this change required? What problem does it solve? -->
This makes the folder structure more logical and easier to find POM's as
needed.

## Type of changes
This was done to make navigating and finding the POMs easier and was
suggested by Rob during a playwright demo.

<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply. -->

- [x] Refactoring (non-breaking change)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would change existing
functionality)
- [ ] Bug fix (non-breaking change which fixes an issue)

## Checklist

<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->

- [x] I am familiar with the [contributing
guidelines](https://github.com/nhs-england-tools/playwright-python-blueprint/blob/main/CONTRIBUTING.md)
- [x] I have followed the code style of the project
- [ ] I have added tests to cover my changes (where appropriate)
- [ ] I have updated the documentation accordingly
- [ ] This PR is a result of pair or mob programming

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Co-authored-by: Megha Prasannan <[email protected]>

Author: adrianoaru-nhs