Switch to using Poetry for dependency management

[maxdymond]

This pull request includes changes that transition the project from using pip to manage Python dependencies to using Poetry. This includes updates to the CI workflow, shell scripts, and the removal of the dev-requirements.txt file. Additionally, a CHANGELOG.md file has been added to document project changes, and the pyproject.toml file has been introduced to define the project and its dependencies.

Changes to dependency management:

• .github/workflows/ci.yml: The CI workflow now uses Poetry to install dependencies and run code analysis tools.
• create_resources.sh and create_resources_nosharedkey.sh: These scripts now check for the presence of Poetry, and use it to create a requirements.txt file. [1] [2] [3]
• dev-requirements.txt: This file has been removed, as its contents have been moved to the pyproject.toml file.
• pyproject.toml: This new file defines the project and its dependencies.

Additional changes:

• CHANGELOG.md: This new file will be used to document all notable changes to the project.