Refactor(plugins): Remove jsonschema dependency

[ClausHolbechArista]

Change Summary

Remove jsonschema dependency

Component(s) name

Schema validation

Proposed changes

• Schemas are no longer validated at runtime. Instead they are validated during development in pre-commit.
• Jsonschema dependency has been removed from runtime code. It is still required for development workflows.
• Cleaning up unused extend_schema method.

[github-actions]

Review docs on Read the Docs

To test this pull request:

# Create virtual environment for this testing below the current directory
python -m venv test-avd-pr-4348
# Activate the virtual environment
source test-avd-pr-4348/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/ClausHolbechArista/avd.git@refactor/plugins/reimplement-schema-validation-to-remove-jsonschema-dependency#subdirectory=python-avd" --force
# Point Ansible collections path to the Python virtual environment
export ANSIBLE_COLLECTIONS_PATH=$VIRTUAL_ENV/ansible_collections
# Install Ansible collection
ansible-galaxy collection install git+https://github.com/ClausHolbechArista/avd.git#/ansible_collections/arista/avd/,refactor/plugins/reimplement-schema-validation-to-remove-jsonschema-dependency --force
# Optional: Install AVD examples
cd test-avd-pr-4348
ansible-playbook arista.avd.install_examples

[sonarcloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[carlbuchmann]

LGTM