chore(DEV SETUP): added Bash and PowerShell dev setup scripts

[p-y-t-h-e-c]

Hello,

To address part of the issue #164 resolving local development setup.
I have added both Bash and PowerShell setup scripts.

The purpose of these scripts is to provide a consistent and automated way to create and configure a local development environment. The scripts perform the following steps:

• Create and activate a virtual environment
• Check and upgrade pip to the latest version
• Verify whether pre-commit is installed
• Install or update pre-commit as needed
• Create a default .pre-commit-config.yaml file if one does not exist
• Create a default .markdownlint.json file if one does not exist
• Install and update all pre-commit hooks listed in .pre-commit-config.yaml

Additionally, a corresponding dev section has been added to the .gitignore file to ensure these configuration files and local environment artifacts are not pushed to the remote repository

[PeteZ238]

Is it worth adding some docs in contributing on how to use the scripts?

[p-y-t-h-e-c]

Is it worth adding some docs in contributing on how to use the scripts?

Added now